134 files changed, 1 insertions, 6723 deletions
diff --git a/README.md b/README.md
index be7ccf1..990383e 100644
--- a/README.md
+++ b/README.md
@@ -1,20 +1,2 @@
-### Код от семинарите по ООП - спец. Компютърни науки - летен семестър 2020/2021
+### Код от семинарите по ООП - спец. Компютърни науки и спец. Софтуерно инженерството
 
-
-
- - **Тема  1:** Структури. Декалрация и използване на структури. Предговор на някои теми от УП (динамична памет, сортировки).
- - **Тема  2:**  Потоци и текстови файлове. Писане и четене в **текстов файл**.
- - **Тема  3:**  Потоци и двоични файлове. Състояние на поток. Писане и четене в **двоични файлове**.
- - **Тема  4:**  Структури. Размер на обекти. **Подравняване**. Работа с **обекти, динамична памет и двоични файлове**.
- - **Тема  5:**  Член-функции. Жизнен цикъл на обект. Конструктори и деструктор. **Капсулация**. Модификатори за достъп. Член-функции **get** и **set**.
- - **Тема  6:**  Разделна компилация. **Абстракция**. Копиращ конструктор и оператор=
- - **Тема  7:**  Динамична памет в класовете. Голямата четворка (**Rule of four**).
- - **Тема  8:**  Предефиниране на оператори. Приятелски класове и функции.
- - **Тема  9:**  **Композиция** на обекти. Масиви от обекти. **has-a** взаимотношения.
- - **Тема  10:**  Шаблони. Реализация на шаблонен клас.
- - **Тема  11:**  Move семантики.
- - **Тема  12:**  Наследяване.  **is-a** взаимотношения.
- - **Тема  13:**  Статично и динамично свързване. Виртуални функции. **Полиморфизъм**. Абстрактни класове.
- - **Тема  14:**  Колекции от обекти в **полиморфна йерархия**. Копиране и триене.
- - **Тема  15:**  Factory pattern. Полиморифизъм. Преобразуване на указател от базов клас до указател от клас-наследник.
- - **Тема  16:**  Дървовидна структура от обекти от полиморфна йерархия.
diff --git a/Sem. 01/README.md b/Sem. 01/README.md
deleted file mode 100644
index e61f925..0000000
--- a/Sem. 01/README.md
+++ /dev/null
@@ -1,55 +0,0 @@
-
-
-##  Структури
-
-Структурите в C++ се използват за групиране на елементи. Елементите, наричани още членове, могат да бъдат от различен тип и с различна дължина.
- ```c++
-struct Box
-{
-	int height;
-	int weight;
-}
- ```
-
-###  Деклариране на обекти от новия тип
- ```c++
-Box b; //default values to height and weight
-
-Box b2 = {3, 4} // height = 3, weight = 3;
-
-Box b3;
-b3.height = 13;
-b3.weight = 14;
- ```
-	
-###  Подаване във функции
-Ако няма да променяме обекта го подаваме по **константна референция.**
- ```c++
-int calculcateArea(const Box& b)
-{
-    return b.height * b.weight;
-}
-```
-   Може и само по **референция**, но тогава промените ще се отразят върху подадения аргумент.
-   
- ```c++
-void readBox(Box& b)
-{
-    cin >> b.height >> b.weight;
-}
- ```
-Може и да го подаваме по **копие**.
- ```c++
-Box revertBox(Box b)
-{
-    int temp = b.height;
-    b.height = b.weight;
-    b.weight = temp;
-
-    return b;
-}
-```
-### Задачи
-
-**Задача 1:** Въвежда се цяло число **N**  и после **N** тригъгълника в равнината, определени от 3 точки ( 6 координати).
-Отпечатайте тригълниците **сортирани по лицата им.**
diff --git a/Sem. 01/notes_1.pdf b/Sem. 01/notes_1.pdf
deleted file mode 100644
index 6110f89..0000000
--- a/Sem. 01/notes_1.pdf
+++ /dev/null
diff --git a/Sem. 01/task1.cpp b/Sem. 01/task1.cpp
deleted file mode 100644
index e6f4661..0000000
--- a/Sem. 01/task1.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <iostream>
-#include <chrono>
-
-using namespace std;
-
-bool checkIfObratim(size_t element, size_t Z)
-{
-	for (int i = 1; i < Z; i++)
-	{
-		if ((i * element) % Z == 0)
-		{
-			std::cout << "Obratniq element na " << element << " e " << i << std::endl;
-			return true;
-		}
-	}
-	return false;
-}
-size_t countDivisers(size_t Z)
-{
-	size_t count = 0;
-	for (int i = 1; i < Z; i++)
-	{
-		if (checkIfObratim(i,Z))
-			count++;
-		else
-		{
-			std::cout << "Neobratim " << i << std::endl;
-		}
-	}
-	return count;
-}
-int main()
-{
-
-	cout << countDivisers(4096) << endl;
-
-}
diff --git a/Sem. 01/task1/task1.cpp b/Sem. 01/task1/task1.cpp
deleted file mode 100644
index 67ad5b1..0000000
--- a/Sem. 01/task1/task1.cpp
+++ /dev/null
@@ -1,126 +0,0 @@
-#include <iostream>
-#include <chrono>
-
-using namespace std;
-
-
-struct point
-{
-	int x;
-	int y;
-};
-void print(const point& ptr)
-{
-	cout << ptr.x << " " << ptr.y << endl;
-}
-point readPoint()
-{
-	int x, y;
-	cin >> x >> y;
-	return{ x, y };
-}
-double getDist(const point& origin, const point& dest)
-{
-	double dx = origin.x - dest.x;
-	double dy = origin.y - dest.y;
-
-	return sqrt(dx*dx + dy*dy);
-}
-
-
-struct triangle
-{
-	point p1;
-	point p2;
-	point p3;
-};
-
-double getArea(const triangle& tr)
-{
-	double sideA = getDist(tr.p1, tr.p2);
-	double sideB = getDist(tr.p2, tr.p3);
-	double sideC = getDist(tr.p3, tr.p1);
-
-	double halfP = (sideA + sideB + sideC) / 2;
-	return sqrt(halfP * (halfP - sideA) * (halfP - sideB) * (halfP - sideC));
-
-}
-
-void print(const triangle& tr)
-{
-	cout << "Point1: ";
-	print(tr.p1);
-	cout << "Point2: ";
-	print(tr.p2);
-	cout << "Point3: ";
-	print(tr.p3);
-	cout << getArea(tr) << endl << endl;
-}
-
-void swap(int * arr, int i, int j)
-{
-	int temp = arr[i];
-	arr[i] = arr[j];
-	arr[j] = temp;
-}
-void swap(triangle* arr, int i, int j)
-{
-	triangle temp = arr[i];
-	arr[i] = arr[j];
-	arr[j] = temp;
-}
-void selectionSort(int* areas, triangle* triangles, int len)
-{
-	for (int i = 0; i < len-1; i++)
-	{
-		int currPos = i;
-		int min = i;
-
-		for (int j = i; j < len; j++)
-		{
-			if (areas[j] < areas[min])
-				min = j;
-		}
-
-		if (min != i)
-		{
-			swap(areas, i, min);
-			swap(triangles, i, min);
-		}
-	}
-}
-int main()
-{
-
-
-	int n;
-	cin >> n;
-	
-	triangle* triangles = new triangle[n];
-
-	for (int i = 0; i < n; i++)
-	{
-		point p1 = readPoint();
-		point p2 = readPoint();
-		point p3 = readPoint();
-
-		triangles[i].p1 = p1;
-		triangles[i].p2 = p2;
-		triangles[i].p3 = p3;
- 	}
-
-	int* areas = new int[n];
-
-
-	for (int i = 0; i < n; i++)
-		areas[i] = getArea(triangles[i]); 
-	
-	selectionSort(areas, triangles, n);
-
-	for (int i = 0; i < n; i++)
-		print(triangles[i]);
-
-	delete[] triangles;
-	delete[] areas;
-
-}
diff --git a/Sem. 02/README.md b/Sem. 02/README.md
deleted file mode 100644
index 1a4c845..0000000
--- a/Sem. 02/README.md
+++ /dev/null
@@ -1,137 +0,0 @@
-##  Файлове (част 1). Текстови файлове.
-Видове потоци:
- - Потоци за вход (istream).
- - Потоци за изход (ostream).
-
-#####  Пример за работа с поток за вход (cin)
- ```c++
-#include <iostream>
-using namespace std;
-
-int main()
-{
-	int a, b;
-	cin >> a >> b;
-}
- ```
- Четем от стандартния вход.
-
-#####  Пример за работа с поток за изход (cout)
- ```c++
-#include <iostream>
-using namespace std;
-
-int main()
-{
-	int a = 10;
-	int b = 12;
-	int c = a + b;
-
-	cout << a << " + " << b << " = " << c << endl;
-}
- ```
-	
-### Работа с поток за вход от файл (ifstream)
-Пример за четене от файл!
- ```c++
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-int main()
-{
-	ifstream file("myFile.txt");
-
-	if (!file.is_open())
-	{
-		cout << "Error!" << endl;
-		return -1;
-	}
-	int a, b;
-
-	file >> a >> b;
-
-	file.close();
-}
-```
-Пример за прочитане на цялото съдържание файл:
- ```c++
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-const int BUFF_SIZE = 1024;
-int main()
-{
-	ifstream file("myFile.txt");
-
-	if (!file.is_open())
-	{
-		cout << "Error!" << endl;
-		return -1;
-	}
-	while (!file.eof())
-	{
-		char buff[BUFF_SIZE];
-		file.getline(buff, BUFF_SIZE);
-		
-		//do something with the line
-		cout << line << endl;
-	}
-	file.close();
-}
-```
-### Работа с поток за изход към файл (ofstream)
-   
- ```c++
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-int main()
-{
-	ofstream file("myFile.txt");
-
-	if (!file.is_open())
-	{
-		cout << "Error!" << endl;
-		return -1;
-	}
-	int a = 3;
-	int b = 10;
-
-	file << a << " " << b << " " << a + b << endl;
-	
-	if(!file.eof()) //check if the file has ended
-		cout << "The file contains more data after the two integers!" << endl;
-
-	file.close();
-}
- ```
- ##  Задачи
- 
-**Задача 1**: Напишете програма, която отпечатва собствения си код.
-
-**Задача 2**: Напишете програма,  която чете comma-separated values (**CSV**) файл със студенти **със следните 4 полета**: Първо име, Фамилно име, Имейл, Факултетен номер.
-1.  Със стартирането на програмата потребителят да въвежда име на файл, който да бъде зареден в паметта.
-2.  Напишете функция, която след зареждане на файла да отпечатва на **стандартния изход** информация за студента при подаден **факултетен номер**.
-3.  Напишете функция, която **по подаден факултетен номер и низ**, променя първото име на студента, който има дадения факултетен номер, с подадения низ.
-4.  Напишете функцията , която приема низ (име на файл) и запазва студентите в същия формат (**CSV**). Т.е. при повторно пускане на програмата да може да прочете новия генериран файл.
-
-Да се реализира прост интерфейс, с който да се извикват написаните фунцкии през конзолата:
-
-**Пример** (входът от потребителя започва с '>'):
-
- ```
-Open file: 
->students.csv
-File successfully opened!
->print 80000
-Name = Stefan Velkov, Email: stefan@yahoo.com, FN: 80000
->edit 80000 Krum
->print 80000
-Name = Krum Velkov, Email: stefan@yahoo.com, FN: 80000
->save students2.csv
-file students2.csv successfully saved!
-```
diff --git a/Sem. 02/notes_02.pdf b/Sem. 02/notes_02.pdf
deleted file mode 100644
index a7372af..0000000
--- a/Sem. 02/notes_02.pdf
+++ /dev/null
diff --git a/Sem. 02/task1/selfPrintingTask.cpp b/Sem. 02/task1/selfPrintingTask.cpp
deleted file mode 100644
index 862cf07..0000000
--- a/Sem. 02/task1/selfPrintingTask.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-const int MAX_SIZE = 1024;
-int main()
-{
-	ifstream inputFile("selfPrintingTask.cpp");
-	
-	if (inputFile.fail())
-	{
-		cout << "Error!" << endl;
-		return -1;
-	}
-	
-	while (!inputFile.eof())
-	{
-		char buff[MAX_SIZE];
-		inputFile.getline(buff, MAX_SIZE);
-		cout << buff << endl;
-	}
-        inputFile.close()
-
-	return 0;
-}
diff --git a/Sem. 02/task2/students.csv b/Sem. 02/task2/students.csv
deleted file mode 100644
index 1d7debc..0000000
--- a/Sem. 02/task2/students.csv
+++ /dev/null
@@ -1,10 +0,0 @@
-Име,Фамилия,"Имейл адрес","Факултетен номер"
-Peter,Ivanov,peter@mail.bg,81235
-Alexander,Popov,popov@abv.bg,81234
-Stefan,Velikov,velikov@mail.bg,81876
-Krasimir,Petkov,krasi@abv.bg,81234
-Stefani,Angelova,stef@gmail.com,81876
-Ivana,Marinova,ivana@abv.bg,81321
-Stefan,Velkov,stefan@yahoo.com,80000
-Krasimira,Markova,krasi@mail.bg,81234
-Wladimir,Klitschko,wlad@kiev.com,89999
-\ No newline at end of file
diff --git a/Sem. 02/task2/studentsDatabase.cpp b/Sem. 02/task2/studentsDatabase.cpp
deleted file mode 100644
index 7f9a5f5..0000000
--- a/Sem. 02/task2/studentsDatabase.cpp
+++ /dev/null
@@ -1,253 +0,0 @@
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-const int FIELD_MAX_SIZE = 50;
-const int BUFFER_LINE_SIZE = 1024;
-
-struct OOPstudent
-{
-	char firstName[FIELD_MAX_SIZE];
-	char lastName[FIELD_MAX_SIZE];
-	char email[FIELD_MAX_SIZE];
-	int fn = 0;
-
-};
-
-int countLines(const char* fileName)
-{
-	ifstream f(fileName);
-	if (!f.is_open())
-		return -1;
-	int linesCount = 0;
-
-	while (!f.eof())
-	{
-		char buff[1024];
-		f.getline(buff, 1024);
-		linesCount++;
-	}
-	f.close();
-
-	return linesCount;
-
-}
-// abc,bcd,ab@Abv.bg,fn
-void readStudent(const char* input, OOPstudent& student)
-{
-	int ind = 0;
-
-	// first name
-	while (input[ind] != ',')
-	{
-		student.firstName[ind] = input[ind];
-		ind++;
-	}
-	student.firstName[ind] = '\0';
-	ind++;
-
-	//last name
-	int lastNameInd = 0;
-	while (input[ind] != ',')
-		student.lastName[lastNameInd++] = input[ind++];
-	student.lastName[lastNameInd] = '\0';
-	ind++;
-
-	//email
-	int emailInd = 0;
-
-	while (input[ind] != ',')
-		student.email[emailInd++] = input[ind++];
-	student.email[emailInd] = '\0';
-	ind++;
-
-	//fn
-	while (input[ind] != '\0')
-		(student.fn *= 10) += (input[ind++] - '0');
-	
-}
-
-bool saveStudentsToFile(const OOPstudent* studentsCollection, int len, const char* fileName)
-{
-	ofstream outFile(fileName);
-
-	if (!outFile.is_open())
-		return false;
-
-	outFile << "First name, Last name, email, fn" << endl;
-
-	for (int i = 0; i < len; i++)
-		outFile << studentsCollection[i].firstName << "," << studentsCollection[i].lastName << "," << studentsCollection[i].email << "," << studentsCollection[i].fn << endl;
-
-	outFile.close();
-
-	return true;
-}
-
-int indexOfFirstSpaceOrTerminatingZero(const char* command)
-{
-	int ind = 0;
-	while (*command != ' ' && *command != '\t' && *command != '\0')
-	{
-		command++;
-		ind++;
-	}
-	return ind;
-
-}
-
-bool printStudent(const OOPstudent* arrayOfStudents, int len,  int fn)
-{
-	for (int i = 0; i < len; i++)
-	{
-		if (arrayOfStudents[i].fn == fn)
-		{
-			cout << arrayOfStudents[i].firstName << "," << arrayOfStudents[i].lastName << "," << arrayOfStudents[i].email << "," << arrayOfStudents[i].fn << endl;
-			return true;
-		}
-	}
-	return false;
-}
-bool editFirstName(OOPstudent* arrayOfStudents, int len, int fn, const char* newFirstName)
-{
-	for (int i = 0; i < len; i++)
-	{
-		if (arrayOfStudents[i].fn == fn)
-		{
-			strcpy(arrayOfStudents[i].firstName, newFirstName);
-			return true; //success!
-		}
-	}
-	return false; //no such student
-}
-int main()
-{
-
-	cout << "Open file:" << endl << ">";
-
-	char fileName[BUFFER_LINE_SIZE];
-	cin.getline(fileName, BUFFER_LINE_SIZE);
-		
-	int studentsCount = countLines(fileName) - 1; // We ignore the first line 
-
-
-	if (studentsCount <= 0)
-	{
-		cout << "Error while reading data from the file " << endl;
-		return -1;
-	}
-
-	OOPstudent* studentsCollection = new OOPstudent[studentsCount];
-
-
-	ifstream f(fileName, ios::_Nocreate);
-
-	if (!f.is_open())
-	{
-		cout << "Error!" << endl;
-		delete[] studentsCollection;
-		return -1;
-	}
-
-	int line = 1;
-	while (!f.eof())
-	{
-		char buff[BUFFER_LINE_SIZE];
-		f.getline(buff, BUFFER_LINE_SIZE);
-
-		if (line == 1)
-		{
-			line++;
-			continue;
-		}
-
-		readStudent(buff, studentsCollection[line - 2]);
-		line++;
-	}
-	f.close();
-
-	cout << "File successfully opened!" << endl;
-
-	char commandLine[BUFFER_LINE_SIZE];
-	do
-	{
-		cout << ">";
-		cin.getline(commandLine, 1024);
-		size_t len = strlen(commandLine);
-
-
-
-		//first argument (edit, save ...)
-		size_t firstArgSize = indexOfFirstSpaceOrTerminatingZero(commandLine);
-		char* commandFirstArg = new char[firstArgSize + 1];
-
-		for (int i = 0; i < firstArgSize; i++)
-			commandFirstArg[i] = commandLine[i];
-		commandFirstArg[firstArgSize] = '\0';
-
-
-	
-
-		if (len == firstArgSize) //no more arguments - quit? Check is bellow
-			continue;
-
-		//second argument (students.csv, 45543 ...)
-		size_t secondArgSize = len - firstArgSize - 1;
-		char* commandSecondArg = new char[secondArgSize + 1];
-
-		for (int i = 0; i < secondArgSize; i++)
-			commandSecondArg[i] = commandLine[firstArgSize + 1 + i];
-		commandSecondArg[secondArgSize] = '\0';
-		if (strcmp(commandFirstArg, "print") == 0)
-		{
-			int fn = atoi(commandSecondArg);
-
-			bool res = printStudent(studentsCollection, studentsCount, fn);
-
-			if (!res)
-				cout << "Student with fn: " << fn << " doesn't exist!" << endl;;
-		}
-		else if (strcmp(commandFirstArg, "edit") == 0)
-		{
-			int fn = atoi(commandSecondArg);
-
-			//we have a third argument here. It's in the second arguments string
-
-			size_t seprator = indexOfFirstSpaceOrTerminatingZero(commandSecondArg);
-
-			size_t thirdArgumentSize = secondArgSize - seprator;
-			char* commandThirdArg = new char[thirdArgumentSize + 1];
-			
-			for (int i = 0; i < thirdArgumentSize; i++)
-				commandThirdArg[i] = commandSecondArg[seprator + 1 + i];
-			commandThirdArg[thirdArgumentSize] = '\0';
-
-			bool result = editFirstName(studentsCollection, studentsCount, fn, commandThirdArg);
-
-			if (result)
-				cout << "Succesfully changed name!" << endl;
-			else
-				cout << "Student with fn: " << fn << "doesn't exist!" << endl;
-
-			delete[] commandThirdArg;
-		}
-		else if (strcmp(commandFirstArg, "save") == 0)
-		{
-
-			bool res = saveStudentsToFile(studentsCollection, studentsCount, commandSecondArg);
-
-			if (res)
-				cout << "Successfully saved to file: " << commandSecondArg << endl;
-			else
-				cout << "Error while saving in file: " << commandSecondArg << endl;
-
-		}
-		delete[] commandFirstArg;
-		delete[] commandSecondArg;
-
-	} while (strcmp(commandLine, "Quit"));
-
-	delete[] studentsCollection;
-	return 0;
-}
diff --git a/Sem. 03/README.md b/Sem. 03/README.md
deleted file mode 100644
index 6439ced..0000000
--- a/Sem. 03/README.md
+++ /dev/null
@@ -1,129 +0,0 @@
-# Файлове (част 2). Двоични файлове.
-
-## Режими за работа с файлове
-
-
-| Режим:| Ефект:                                                                      | 
-|--------|------------------------------------------------------------------------------|
-|ios::in |Отваря файл за четене  (по подразбиране на ifstream)                           |
-|ios::out    |Отваря файл за четене (по подразбиране на ofstream)                        |
-|ios::binary | Отваря файл в двоичен режим                                               |
-|ios::trunc  | Ако файлът съществува,  съдържанието му се изтрива след отваряне на поток |
-|ios::app    | Отваря файлът за вмъкване. Поставя put указателят в края. Не се допуска вмъкване преди края на потока      |
-|ios::ate    | Отваря файлът за вмъкване. Поставя put указателят в края. Допуска вмъкване на прозиволни места                |
-|ios::nocreate | Отваря за вмъкване, само ако файлът с указаното име съществува.|
-ios::noreplace | Отваря за вмъкване само ако файлът с указаното име не съществува.|
-### Пример:
- ```c++
-#include <iostream>
-#include <fstream>
-using namespace std;
-int main()
-{
-	fstream f("test.txt", ios::out | ios::app);
-
-	if (!f.is_open())
-	{
-		cout << "Error while opening file!" << endl;
-		return -1;
-	}
-	f << 33; //appends at the end of the file
-
-	f.close();
-	return 0;
-}
- ```
-## Флагове на състоянията на потока 
-| Флаг:| Значение:                                                                      | 
-|--------|------------------------------------------------------------------------------|
-|bad()   | Има загуба на информация. Някоя операция за четене и писане не е изпълнена. |
-|fail() |Последната входно/изходна операция е невалидна.|
-| eof() | Достигнат е края на файла. |
-|good() | Всички операции са изпълнени успешно.|
-|clear()| Изчиства състоянието на потока (Вече good() ще върне истина).|
-
-## Позициониране във файл
-
- - tellg() - Връща позцития на текущия символ в **потока за четене**
- - tellp() - Връща позцития на текущия символ в **потока за писане**
- - seekg(offset, direction) - Премества get-указателят на позцития на **потока за четене**.
- - seekp(offset, direction) - Премества put-указателят на позцития на **потока за писане**.
- 
- 
- -**offset** : целочислена стойност. Отместването от direction.
- 
- -**direction** : Може да заема следите стойностти:
-
-1. ios::beg - началото на файла.
-2. ios::cur - текущата позиция във файла.
-3. ios::end - края на файла.
-
-### Пример:
- ```c++
-#include <iostream>
-#include <fstream>
-using namespace std;
-size_t getFileLen(std::ifstream& ifs) //we can pass stream to functions.
-{ 
-
-	ifs.seekg(0, std::ios::end); //set the position at the end of the file
-	size_t size = ifs.tellg(); //get the curren position
-	ifs.seekg(0, std::ios::beg); //set the position at the beginning
-
-	return size;
-}
- ```
-## Двоични файлове.
-
-Изпоилзваме функциите:
-
-1. .read(char* memoryBlock, size_t size);
-2. .write(const char* memoryBlock, size_t size);
-
-Обърнете внимание, че функцията приема **char***. Ако искаме да запазим променлива от друг вид, ще трябва експлицитно да преобразуваме указателя към тип char* (без значение, че указателят не сочи към елементи от тип char)
-
-### Пример за писане в двоичен файл:
- ```c++
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-int main()
-{
-	ofstream f("file.dat");
-
-	int a = 155555;
-
-	f.write((const char*)&a, sizeof(int));
-
-	return 0;
-}
- ```
- ### Пример за четене от двоичен файл:
- 
-  ```c++
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-int main()
-{
-	ifstream f("file.dat");
-
-	int a;
-
-	f.read((char*)&a, sizeof(int));
-
-	cout << a << endl;
-
-	return 0;
-}
- ```
-
- ### Съдържанието на двоичния файл:
- ![enter image description here](https://i.ibb.co/G3R72qG/sudurjanie.png "Binary file example")
- 
-Байтовете се записват в **обратна посока**. Най-старшият байт е последен. Следователно запаментеното число е **00025fa3**, което е точно шестанйсетичния запис на числото **155555**.
- 
diff --git a/Sem. 03/binaryFileExample.cpp b/Sem. 03/binaryFileExample.cpp
deleted file mode 100644
index e69de29..0000000
--- a/Sem. 03/binaryFileExample.cpp
+++ /dev/null
diff --git a/Sem. 03/notes_03.pdf b/Sem. 03/notes_03.pdf
deleted file mode 100644
index 0200d97..0000000
--- a/Sem. 03/notes_03.pdf
+++ /dev/null
diff --git a/Sem. 03/sizeFile.cpp b/Sem. 03/sizeFile.cpp
deleted file mode 100644
index 862d565..0000000
--- a/Sem. 03/sizeFile.cpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-size_t getFileSize(const char* fileName)
-{
-	ifstream f(fileName);
-
-	if (!f.is_open())
-		return 0;
-
-	f.seekg(0, ios::end);
-	size_t pos = f.tellg();
-	
-	f.close();
-
-	return pos;
-}
-int main()
-{
-	
-
-	cout << getFileSize("sizeFile.cpp") << endl;
-
-	return 0;
-}
-\ No newline at end of file
diff --git a/Sem. 04/README.md b/Sem. 04/README.md
deleted file mode 100644
index 8974ae7..0000000
--- a/Sem. 04/README.md
+++ /dev/null
@@ -1,238 +0,0 @@
-
-
-
-#  Структури и двоични файлове.
-###  Размер на структура:
- ```c++
-#include <iostream>
-using namespace std;
-
-struct A 
-{
-  int a;
-  int b;
-};
-
-int main()
-{
-    cout << sizeof(A) << endl; // 8 bytes (4 bytes for each int)
-
-    return 0;
-}
- ```
- 
- Ето как изглежда структурата в паметта:
- 
- 
- ![enter image description here](https://i.ibb.co/9yWmQjP/2.png)
- 
-Пример за **естествено подравняване**:
-
- ```c++
-#include <iostream>
-
-using namespace std;
-
-struct B 
-{
-  char ch;
-  int a;
-};
-
-int main()
-{
-    cout << sizeof(B); // 8 byte-s
-
-    return 0;
-}
-
- ```
- В паметта нещата изглеждат така:
- 
-![enter image description here](https://i.ibb.co/zJ5bLCw/pic1.png)
-
-###  Подравняване 
-При представянето на обект (от някакъв тип) в паметта:
-
--  В паметта променливите са разположени **в същия ред**, в който са декларирани в структурата.
- - Подравняването става по **големината на най-голямата примитивна член-променлива** на структурата - размерът на структурата трябва да се дели на размерът на най-голямата променлива.
- - *Неформално*: Всяка променлива трябва да е на байт (ако приемем, че байтовете имат индекс, започвайки от 0), който е **кратен на големината на променливата**.
- 
- За постигане на най-компактно представяне полетата на структурата да се сортират по тяхната големина в низходящ ред
-
-###  Пример за записване на обекти във файл.
- ```c++
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-struct Test
-{
-  char ch;
-  int a;
-};
-int main()
-{
-    ofstream f("output.dat", ios::binary);
-    
-    if(!f.is_open())
-    {
-        cout << "Error!" << endl;
-        return -1;
-    }
-    
-    Test arr[3] = {{'a', 400},{'b', 500},{'c', 600}};
-    
-    f.write((const char*)&arr, sizeof(arr));
-    
-    f.close();
-    
-    return 0;
-}
-
- ```
-
-След изпълнението на програмата, файлът (**output.dat**) изглежда така:
-
-![Image of the binary file after running the code](https://i.ibb.co/0JthLd6/3-A978-D14-7-C7-A-4-ABD-8-B0-C-DA27-F6-E9-CD0-A.png "Binary file")
-
- 
-
-
-
-###  Пример за записване на обекти, които съдържат динамично заделени данни, във файл.
- ```c++
-#include <iostream>
-#include <fstream>
-
-using namespace std;
-
-
-struct Student
-{
-	char* name;
-	int fn;
-	int gradesCount;
-	double averageGrade;
-};
-void print(const Student& st)
-{
-	cout << st.name << " " << st.fn << " " << st.gradesCount << " " << st.averageGrade << endl;
-}
-Student createStudent(const char* name, int fn, int gradesCount, double avGrade)
-{
-	Student obj;
-
-	size_t nameLen = strlen(name);
-
-	obj.name = new char[nameLen + 1];
-	strcpy(obj.name, name);
-
-	obj.fn = fn;
-	obj.gradesCount = gradesCount;
-	obj.averageGrade = avGrade;
-
-	return obj;
-}
-void saveStudentToFile(ofstream& f, const Student& st)
-{
-	size_t nameLen = strlen(st.name);
-	
-	f.write((const char*)&nameLen, sizeof(nameLen));  //first we write the size of the name!
-	f.write(st.name, nameLen);
-	
-	f.write((const char*)&st.fn, sizeof(st.fn));
-	f.write((const char*)&st.gradesCount, sizeof(st.gradesCount));
-	f.write((const char*)&st.averageGrade, sizeof(st.averageGrade));
-
-}
-Student readStudentFromFile(ifstream& f)
-{
-	Student res;
-
-	size_t nameLen;
-
-	f.read((char *)&nameLen, sizeof(nameLen)); //first we read the size of the name!
-
-	res.name = new char[nameLen + 1];
-	f.read(res.name, nameLen);
-	res.name[nameLen] = '\0';
-
-	f.read((char *)&res.fn, sizeof(res.fn));
-	f.read((char*)&res.gradesCount, sizeof(res.gradesCount));
-	f.read((char*)&res.averageGrade, sizeof(res.averageGrade));
-
-	return res;
-}
-void freeStudent(Student& s)
-{
-	delete[] s.name;
-
-	s.averageGrade = s.fn = s.gradesCount = 0;
-
-}
-
-
-int main()
-{
-	{ //save students to file
-		Student s1 = createStudent("Ivan", 1234, 2, 4);
-		Student s2 = createStudent("Petur", 5555, 5, 5.5);
-
-		ofstream f1("uni.dat", ios::binary);
-
-		if (!f1.is_open())
-		{
-			cout << "Error" << endl;
-			return -1;
-		}
-
-		saveStudentToFile(f1, s1);
-		saveStudentToFile(f1, s2);
-		
-		freeStudent(s1);
-		freeStudent(s2);
-
-		f1.close();
-	}
-
-	{ //read students from file
-		ifstream f2("uni.dat", ios::binary);
-
-		if (!f2.is_open())
-		{
-			cout << "Error" << endl;
-			return -1;
-		}
-		Student s1 = readStudentFromFile(f2);
-		Student s2 = readStudentFromFile(f2);
-
-		print(s1);
-		print(s2);
-
-		freeStudent(s1);
-		freeStudent(s2);
-
-		f2.close();
-	}
-}
- 
-
- ```
-
-### Задачи
-
-**Задача 1:** Да се реализира система за база данни **произволен брой унивеситети**. Всеки университет има име (**низ до 32 символа**) и колекция  от студенти (**произволен брой**). Всеки студент има - име (**низ с произволна дължина**), факултетен номер, брой получени оценки и средна оценка. Релизирайте **записване във файл и четене от файл** за базата данни.  Релизирайте и следнита функции:
-
-- По подадено име на университет и факултетен номер на студент променя името на студента. 
-
-*changeName(const char &ast; uni, int fn, const char &ast; newName)*
-
-- Добавяне на оценка на даден студент. След добавянето на оценката, трябва да се обнови броят получени оценки и средната оценка.
-
- *addGrade(const char &ast; uni, int fn, int grade)*
-
-- Функция, която сортира университите по среден успех на студентите.
-
-*sort(uni &ast;, size_t unisCount)*
-
diff --git a/Sem. 04/task1/uni-task.cpp b/Sem. 04/task1/uni-task.cpp
deleted file mode 100644
index 0b534c0..0000000
--- a/Sem. 04/task1/uni-task.cpp
+++ /dev/null
@@ -1,378 +0,0 @@
-#include <iostream>
-#include<cstring>
-#include<fstream>
-#pragma warning(disable : 4996)
-
-struct Student 
-{
-	char* name;
-	int fn;
-	int gradesCount;
-	double averageGrade;
-};
-
-struct University 
-{
-	char name[32];
-	Student* collection;
-	size_t studentsCount;
-};
-
-void print(const Student& st) 
-{
-	std::cout << std::endl << "======STUDENT======" << std::endl;
-	std::cout << "Name: " << st.name << std::endl << "Faculcy number:" << st.fn <<
-		std::endl << "Grades: " << st.gradesCount << std::endl << "Avarage: " << st.averageGrade << std::endl;
-}
-
-Student createStudent(const char* name, int fn, int gradesCount, double avGrade) 
-{
-	Student obj;
-
-	size_t nameLen = strlen(name);
-
-	obj.name = new char[nameLen + 1];
-	strcpy(obj.name, name);
-
-	obj.fn = fn;
-	obj.gradesCount = gradesCount;
-	obj.averageGrade = avGrade;
-
-	return obj;
-}
-
-void freeStudent(Student& s) 
-{
-	delete[] s.name;
-
-	s.averageGrade = s.fn = s.gradesCount = 0;
-
-}
-
-void saveStudentToFile(std::ofstream& f, const Student& st) 
-{
-	size_t nameLen = strlen(st.name);
-
-	f.write((const char*)&nameLen, sizeof(nameLen));  //first we write the size of the name!
-	f.write(st.name, nameLen);
-
-	f.write((const char*)&st.fn, sizeof(st.fn));
-	f.write((const char*)&st.gradesCount, sizeof(st.gradesCount));
-	f.write((const char*)&st.averageGrade, sizeof(st.averageGrade));
-}
-
-Student readStudentFromFile(std::ifstream& f) 
-{
-	Student res;
-
-	size_t nameLen;
-
-	f.read((char*)&nameLen, sizeof(nameLen)); //first we read the size of the name!
-
-	res.name = new char[nameLen + 1];
-	f.read(res.name, nameLen);
-	res.name[nameLen] = '\0';
-
-	f.read((char*)&res.fn, sizeof(res.fn));
-	f.read((char*)&res.gradesCount, sizeof(res.gradesCount));
-	f.read((char*)&res.averageGrade, sizeof(res.averageGrade));
-
-	return res;
-}
-
-University createUniversity(const char* _name, const Student* collection, const size_t& studentCount) 
-{
-	University uni;
-
-	strcpy(uni.name, _name);
-	uni.collection = new Student[studentCount];
-	uni.studentsCount = studentCount;
-
-	for (size_t i = 0; i < studentCount; i++) 
-	{
-		uni.collection[i] = collection[i];
-	}
-
-	return uni;
-}
-
-void saveUniversityToFile(std::ofstream& outStream, const University& Uni) 
-{
-	//Writing the name of the university first:
-	outStream.write(Uni.name, 32);
-
-	//Then we write the students count:
-	outStream.write((const char*)(&Uni.studentsCount), sizeof(Uni.studentsCount));
-
-	//Writing every single student:
-	size_t count = Uni.studentsCount;
-	for (size_t i = 0; i < count; i++) 
-	{
-		saveStudentToFile(outStream, Uni.collection[i]);
-	}
-}
-
-University readUniFromFile(std::ifstream& inFile) 
-{
-	//to return:
-	University uni;
-
-	//We follow the same read order as we wrote them:
-
-	//name:
-	inFile.read((char*)(&uni.name), 32);
-
-	//count:
-	inFile.read((char*)(&uni.studentsCount), sizeof(uni.studentsCount));
-
-	//students:
-	size_t studentsCount = uni.studentsCount;
-	uni.collection = new Student[studentsCount];
-
-	for (size_t i = 0; i < studentsCount; i++) 
-	{
-		uni.collection[i] = readStudentFromFile(inFile);
-	}
-
-	return uni;
-}
-
-void printUni(const University& uni) 
-{
-	size_t studentsCount = uni.studentsCount;
-
-	std::cout << std::endl << "----------" << uni.name << "----------";
-
-	for (size_t i = 0; i < studentsCount; i++)
-	{
-		print(uni.collection[i]);
-		std::cout << std::endl;
-	}
-	std::cout << "-------------------------";
-}
-
-void freeUni(University& uni) 
-{
-	for (int i = 0; i < uni.studentsCount; i++)
-		freeStudent(uni.collection[i]);
-
-	strcpy(uni.name, "");
-	uni.studentsCount = 0;
-}
-
-void changeStudentName(Student& st, const char* newName)
-{
-	delete[] st.name;
-	st.name = new char[strlen(newName) + 1];
-	strcpy(st.name, newName);
-}
-
-void changeName(University* uniCollection, const int& uniCount, const char* uni, const int& fn, const char* newName) 
-{
-	int uniFound = -1;
-	int studentFound = -1;
-
-	for (int i = 0; i < uniCount; i++) 
-	{
-		if (strcmp(uniCollection[i].name, uni) != 0) 
-		{
-			continue;
-		}
-
-
-		uniFound = i;
-		size_t studentsCount = uniCollection[i].studentsCount;
-
-		for (size_t j = 0; j < studentsCount; j++) 
-		{
-			if (uniCollection[i].collection[j].fn != fn)
-			{
-				continue;
-			}
-
-			studentFound = j;
-			changeStudentName(uniCollection[i].collection[j], newName);
-			break;
-		}
-		break;
-	}
-
-	if (uniFound != -1 && studentFound != -1) 
-	{
-		std::cout << std::endl << "Changed: " << std::endl;
-		print(uniCollection[uniFound].collection[studentFound]);
-	}
-	else 
-	{
-		std::cout << std::endl << "No such student in this university" << std::endl;
-	}
-}
-
-void addStudentGrade(Student& st, const int& grade)
-{
-	double newAvarageGrade = (double)((st.averageGrade * st.gradesCount) + grade) / (double)(st.gradesCount + 1);
-	st.averageGrade = newAvarageGrade;
-	st.gradesCount++;
-}
-
-void addGrade(University* uniCollection, const int& uniCount, const char* uni, const int& fn, const int& grade) 
-{
-	int uniFound = -1;
-	int studentFound = -1;
-
-	for (int i = 0; i < uniCount; i++)
-	{
-		if (strcmp(uniCollection[i].name, uni) != 0) 
-		{
-			continue;
-		}
-
-		uniFound = i;
-		size_t studentsCount = uniCollection[i].studentsCount;
-
-		for (size_t j = 0; j < studentsCount; j++) 
-		{
-			if (uniCollection[i].collection[j].fn != fn)
-			{
-				continue;
-			}
-
-			studentFound = j;
-			addStudentGrade(uniCollection[i].collection[j], grade);
-			break;
-		}
-		break;
-	}
-
-	if (uniFound != -1 && studentFound != -1) 
-	{
-		std::cout << std::endl << "Added: " << std::endl;
-		print(uniCollection[uniFound].collection[studentFound]);
-	}
-	else
-	{
-		std::cout << std::endl << "No such student in this university" << std::endl;
-	}
-}
-
-double getSuccess(const University uni) 
-{
-	double avarageGrade = 0;
-	size_t studentsCount = uni.studentsCount;
-
-	for (size_t i = 0; i < studentsCount; i++) 
-	{
-		avarageGrade += uni.collection[i].averageGrade;
-	}
-
-	avarageGrade = avarageGrade / (double)(studentsCount);
-
-	return avarageGrade;
-}
-
-void swapUniversities(University* uniCollection, const int& first, const int& second) 
-{
-	University temp = uniCollection[first];
-	uniCollection[first] = uniCollection[second];
-	uniCollection[second] = temp;
-}
-
-void sort(University* uniCollection, size_t unisCount) 
-{
-	//selection sort
-	for (int pos = 0; pos < unisCount - 1; pos++) 
-	{
-		int minimalIndex = pos;
-		
-		for (int i = pos; i < unisCount; i++) 
-		{
-			int currSuccess = getSuccess(uniCollection[minimalIndex]);
-			if (getSuccess(uniCollection[i]) > currSuccess) 
-			{
-				minimalIndex = i;
-			}
-		}
-
-		if (minimalIndex != pos)
-			swapUniversities(uniCollection, pos, minimalIndex);
-	}
-}
-
-int main() 
-{
-	//simple example:
-
-	//creating university database:---------------
-	University* uniCollection = new University[3];
-
-	//FMI
-	Student collection[3];
-	collection[0] = createStudent("Angel", 81111, 6, 3);
-	collection[1] = createStudent("Dimitar", 82222, 6, 2);
-	collection[2] = createStudent("Anton", 83333, 6, 2);
-
-	University FMI = createUniversity("FMI", collection, 3);
-
-	//TU
-	Student collectionTwo[4];
-	collectionTwo[0] = createStudent("Vesko", 31244, 6, 6);
-	collectionTwo[1] = createStudent("Ivan", 42342, 6, 6);
-	collectionTwo[2] = createStudent("Mariano", 13433, 6, 6);
-	collectionTwo[3] = createStudent("Gabriela", 43234, 6, 6);
-
-	University TU = createUniversity("TU", collectionTwo, 4);
-
-	//UNWE
-	Student collectionThree[5];
-	collectionThree[0] = createStudent("Chavdar", 13579, 6, 4);
-	collectionThree[1] = createStudent("Stoino", 24680, 6, 4);
-	collectionThree[2] = createStudent("Miss Playmate", 24567, 6, 4);
-	collectionThree[3] = createStudent("ex fmi student", 12343, 6, 4);
-	collectionThree[4] = createStudent("bukvalno vseki", 13333, 6, 5);
-
-	University UNWE = createUniversity("UNWE", collectionThree, 5);
-
-	uniCollection[0] = FMI;
-	uniCollection[1] = TU;
-	uniCollection[2] = UNWE;
-	//-------------------------------------------------------------
-
-	//functions:
-	std::ofstream outFile("path.txt", std::ios::binary);
-	saveUniversityToFile(outFile, uniCollection[1]);
-	if (outFile.good() == 0)
-	{
-		std::cout << "Error saving the file";
-	}
-
-	outFile.close();
-
-	std::ifstream inFile("path.txt", std::ios::binary);
-	University example = readUniFromFile(inFile);
-
-	if (inFile.good() == 0) 
-	{
-		std::cout << "Error reading the file";
-	}
-
-	inFile.close();
-
-	printUni(example);
-
-	changeName(uniCollection, 3, "FMI", 83333, "Antoan");
-	addGrade(uniCollection, 3, "FMI", 81111, 6);
-
-	sort(uniCollection, 3);
-
-	std::cout << "\nSorted:\n";
-
-	for (int i = 0; i < 3; i++)
-	{
-		std::cout << i + 1 << ". " << uniCollection[i].name << std::endl;
-	}
-
-	for (int i = 0; i < 3; i++) 
-	{
-		freeUni(uniCollection[i]);
-	}
-}
diff --git a/Sem. 05/Interval/Interval.cpp b/Sem. 05/Interval/Interval.cpp
deleted file mode 100644
index c3f11cf..0000000
--- a/Sem. 05/Interval/Interval.cpp
+++ /dev/null
@@ -1,133 +0,0 @@
-#include <iostream>
-#include <algorithm>
-#include "Interval.h"
-
-bool isPrime(int n)
-{
-	double temp = sqrt(n);
-	for (int i = 2; i <= temp; i++)
-	{
-		if (n % i == 0)
-			return false;
-	}
-	return true;
-}
-
-bool isPalindorme(int n)
-{
-	int reversed = 0;
-
-	while (n != 0)
-	{
-		int lastDigit = n % 10;
-		(reversed *= 10) += lastDigit;
-		n /= 10;
-	}
-	return n == reversed;
-}
-bool containsOnlyDistinctNumbers(int n)
-{
-	bool digits[10];
-	for (int i = 0; i < 10; i++)
-		digits[i] = false;
-
-	while (n != 0)
-	{
-		int lastDigit = n % 10;
-		if (digits[lastDigit])
-			return false;
-		digits[n % 10] = true;
-		n /= 10;
-	}
-	return true;
-}
-
-size_t Interval::countNumbersInIntervalCondition(bool(*pred)(int)) const
-{
-	size_t count = 0;
-	for (int i = a; i <= b; i++)
-	{
-		if (pred(i))
-			count++;
-	}
-	return count;
-}
-
-Interval::Interval() : Interval(0, 0) {}
-
-Interval::Interval(int a, int b)
-{
-	if (a > b)
-		a = b = 0;
-
-	this->a = a;
-	this->b = b;
-}
-
-int Interval::getA() const
-{
-	return a;
-}
-
-int Interval::getB() const
-{
-	return b;
-}
-void Interval::setA(int a)
-{
-	if (a > b)
-		return;
-	this->a = a;
-}
-
-void Interval::setB(int b)
-{
-	if (b < a)
-		return;
-	this->b = b;
-}
-
-size_t Interval::getLength() const
-{
-	return b - a + 1;
-}
-
-bool Interval::isMemberOfInterval(int x) const
-{
-	return (a <= x && x <= b);
-}
-
-size_t Interval::calcPrimeNumbersInTheInterval() const
-{
-	return countNumbersInIntervalCondition(isPrime);
-}
-
-size_t Interval::calcPalindromicNumbersInTheInterval() const
-{
-	return countNumbersInIntervalCondition(isPalindorme);
-}
-
-size_t Interval::calcDiffrentDigitNumbersInTheInverval() const
-{
-	return countNumbersInIntervalCondition(containsOnlyDistinctNumbers);
-}
-
-bool Interval::areStartAndEndPowersOfTwo() const
-{
-	return (a == 0 || (a & a - 1) == 0) && (b == 0 || (b & b - 1) == 0);
-}
-
-Interval Interval::intersect(const Interval& other) const
-{
-	if (b < other.getA() || a > other.getB())
-		return Interval(0, 0);
-
-	int newA = std::max(a, other.getA());
-	int newB = std::min(b, other.getB());
-
-	return Interval(newA, newB);
-}
-bool Interval::isSuperInterval(const Interval& other) const
-{
-	return a <= other.getA() && b >= other.getB();
-}
-\ No newline at end of file
diff --git a/Sem. 05/Interval/Interval.h b/Sem. 05/Interval/Interval.h
deleted file mode 100644
index c8fcbc7..0000000
--- a/Sem. 05/Interval/Interval.h
+++ /dev/null
@@ -1,32 +0,0 @@
-
-class Interval
-{
-	int a;
-	int b;
-
-	size_t countNumbersInIntervalCondition(bool(*pred)(int)) const;
-
-public:
-
-	Interval();
-	Interval(int a, int b);
-	
-	int getA() const;
-	int getB() const;
-
-	void setA(int a);
-	void setB(int b);
-
-	size_t getLength() const;
-	bool isMemberOfInterval(int x) const;
-
-	size_t calcPrimeNumbersInTheInterval() const;
-	size_t calcPalindromicNumbersInTheInterval() const;
-	size_t calcDiffrentDigitNumbersInTheInverval() const;
-	
-	bool areStartAndEndPowersOfTwo() const;
-	
-	Interval intersect(const Interval& other) const;
-	
-	bool isSuperInterval(const Interval& other) const;
-};
diff --git a/Sem. 05/Interval/Source.cpp b/Sem. 05/Interval/Source.cpp
deleted file mode 100644
index 7e6b3e1..0000000
--- a/Sem. 05/Interval/Source.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <iostream>
-#include "Interval.h"
-
-using namespace std;
-
-
-int main()
-{
-	Interval i(1, 11);
-
-	cout << i.calcDiffrentDigitNumbersInTheInverval() << endl;
-
-	cout << i.getLength() << endl;
-	
-}
-\ No newline at end of file
diff --git a/Sem. 05/README.md b/Sem. 05/README.md
deleted file mode 100644
index d9bd067..0000000
--- a/Sem. 05/README.md
+++ /dev/null
@@ -1,218 +0,0 @@
-# Член-функции. Конструктори и деструктор. Модификатори за достъп. Капсулация.
-
-## Член-функции.
-Член-функциите са функции, които работят с член-данните на обекта от дадена структура.
- ```c++
-struct Point
-{
-	int x;
-	int y;
-};
-bool isInFirstQuadrant(const Point& p)
-{
-	return p.x >= 0 && p.y >= 0;
-}
-int main()
-{
-	Point p1 = {3, 4};
-	Point p2 = {-9, 8};
-	cout << isInFirstQuadrant(p1) << endl;
-	cout << isInFirstQuadrant(p2) << endl;
-}
- ```
- 
- Може функцията да бъде член-функция:
- ```c++
-struct Point
-{
-
-	int x;
-	int y
-
-	bool isInFirstQuadrant()
-	{
-		return x >= 0 && y >= 0;
-	}
-	
-};
-
-int main()
-{
-	Point p1 = {3, 4};
-	Point p2 = {-9, 8};
-	cout << p1.isInFirstQuadrant() << endl;
-	cout << p2.isInFirstQuadrant() << endl;
-}
- ```
-#  
-**Член-функциите**:
-
- - Работят с член-данните на класа.
- -  Извикват се с обект на класа
- 
- - Компилаторът преобразува всяка **член-функция** на дадена структура в
-   обикновена функция с уникално име и един допълнителен параметър
-   –**указател към обекта**.
-
-**Константни член-функции**:
-
- - Не променят член-данните на структурата.
- -  Оказва се чрез записването на ключовата  дума **const** в декларацията и в края на заглавието в дефиницията им
- -  Могат да се извикват от константни обекти.
-## Конструктори и деструктор.
-
-**Жизнен цикъл на обект**:
- - Създаване на обект в даден scope – заделя се памет и член-данните се инициализират.
- - Достига се до края на скоупа(област).
- - Обектът и паметта, която е асоциирана с него се разрушава.
-
-**Конструктор**:
- - Извиква се веднъж - при създаването на обекта.
- - Не се оказва експлицитно тип на връщане (връща констатна референция).
- - Има същото име като класа.
- 
- **Деструктор**:
- - Извиква се веднъж - при изтриването на обекта.
- - Не се оказва експлицитно тип на връщане.
- - Има същото име като класа със симовла '~' в началото.
-
- ```c++
-
-#include <iostream>
-
-using namespace std;
-
-
-struct Test 
-{
-  Test()
-  {
-  	cout << "Object is created" <<endl;
-  }
-  
- ~Test()
-  {
-  	cout << "Object is destroyed" <<endl;
-  }
-  int a;
-  int b;
-};
-
-int main()
-{
-	while ()
-	{
-		Test t;// Object is created 
-		if ()
-		{
-			Test t2; // Object is created 
-
-		}// Object is destroyed (t2)
-
-	}//Object is destroyed (t)
-}
-
- ```
- ## Капсулация (encapsulation).
-Понякога искаме потребителите да **нямат достъп до всички член-данни и методи на даден клас**.
-Това е така, защото тяхната промяна може да доведе до **неочаквано поведение** на нашата програма. Принципът за **капсулация** ни помага като позволява да определим кои методи и атрибути може да използват потребителите на нашия клас.
-
- **Модификатор за достъп**:
- 
-| Модификатор за достъп: | Достъп:                         |
-|------------------------|---------------------------------|
-| private                | В текущия клас.                 |
-| protected              | В текущия клас и *наследниците. |
-| public                 | За всеки                        |
-
-**Пример за get-ъри и set-ъри**
-
- ```c++
-
-#include <iostream>
-
-using namespace std;
-
-
-struct Student 
-{
-private:
-	int grade;
-	int age;
-public:
-	Student(int grade, int age)
-	{
-		setGrade(grade);
-		setAge(age);
-	}
-	int getGrade()
-	{
-		return grade;
-	}
-	int getAge()
-	{
-		return age;
-	}
-	void setGrade(int grade)
-	{
-		if(grade >= 2 && grade <= 6)
-			this->grade = grade;
-	}
-	int setAge(int age)
-	{
-		if(age >= 0)
-			this->age = age;
-	}
-};
-
-int main()
-{
-	while ()
-	{
-		Test t;// Object is created 
-		if ()
-		{
-			Test t2; // Object is created 
-
-		}// Object is destroyed (t2)
-
-	}//Object is destroyed (t)
-}
-
- ```
-
-
-## Задачи
-
-**Задача 1:**
-Реализирайте клас/структура интервал, който представлява интервал  [a,b]  (задължително а <= b) от реалната права. Нашият интервал ще бъде дискретен - началото и краят му ще бъдат цели числа и ще разглеждаме само точки, които са цели числа. Релизирайте следният интерфейс:
-
- - Подразбиращ се контруктор, който създава интервала **[0,0]**.
- - Конструктор, който приема двата параметъра. Ако a<=b, то създава интервала **[a,b]**. В противен случай, създава **[0,0]**.
- - Член-функция, която връща **дължината на интервала**.
- - Член-функция, която приема число и проверява **дали е част от интервала**.
- - Член-функция, която връща **броя на простите числа** в интервала.
- - Член-функция, която връща **броя на числата в интервала**, които са палиндорми.
- - Член-функция, която връща **броя на числата, които нямат повтарящи цифри**.
- - Член-функция, която връща дали началото и края на интервала са **степени на 2-ката**. ([2,16] - истина) 
- - Член-функция, която приема интервал и връща **сечението на текущия интервал с подадения**.  (Сечението на [1, 5]  [3, 7]  e [3, 5]).
- - Член-функция, която приема интервал и връща дали подадения (като параметър) интервал е **подинтервал на текущия**(обектът, от който се извиква функцията).
-
-  **Пример за работа с класа:**
- ```c++
-
-int main()
-{
-     Interval t1(3,10); // [3, 10]
-     Interval t2(4,14); // [4, 14]
-     Interval t3; // [0, 0]
-
-     Interval result = t1.intersect(t2); // [4, 10]
-     
-     t2.isSuperInterval(result); //true
-     
-     result.calcPrimeNumbersInTheInterval() // 2 (only 5 and 7)
-}
- ```
-
-
diff --git a/Sem. 06/README.md b/Sem. 06/README.md
deleted file mode 100644
index 70f3ba3..0000000
--- a/Sem. 06/README.md
+++ /dev/null
@@ -1,166 +0,0 @@
-
-# Разделна компилация. Абстракция. Копиращ конструктор и оператор=
-
-## Разделна компилация.
-
-![enter image description here](https://gamedevunboxed.com/wp-content/uploads/2019/08/image.png)
-
-Една програма на С++ може да бъде разбита в множество файлове, които се **компилират независимо един от друг**, т.е. осъществява се **разделна компилация**. В резултат на компилацията се получават няколко **обектни файла** (файлове с разширение **.obj**). Изпълнимият код напрограмата (файл с разширение .ехе) се получава след свързване на обектните файлове (**Linking**).
-
-За да се възполваме максимално от разделната компилация, разделяме класовете на **.h** и **.cpp** файлове. Навсякъде където ще работим с класа, ще включваме **само .h файла.** По този начин, ако променим реализацията на някоя от функциите на класа, ще се **прекомпилира само този файл**.
-
-![enter image description here](https://i.ibb.co/N9RnMHv/sss.png)
-## Абстракция
-Пример за **лоша абстракция**:
-
-```c++
-struct Triangle
-{
-	int x1;
-	int y1;
-	
-	int x2;
-	int y2;
-
-	int x3;
-	int y3;
-};
-int getPer(const Triangle& t)
-{
-	return
-	 sqrt( (t.x1-t.x2)*(t.x1-t.x2) + (t.y1-t.y2)*(t.y1-t.y2) + 
-	 sqrt( (t.x2-t.x3)*(t.x2-t.x3) + (t.y2-t.y3)*(t.y2-t.y3) + 
-	 sqrt( (t.x3-t.x1)*(t.x3-t.x1) + (t.y3-t.y1)*(t.y3-t.y1); 
-}
- ```
- Пример за **по-добра абстракция**:
- ```c++
-struct Point
-{
-	int x;
-	int y
-	double getDistTo(const Point& other)
-	{
-		return sqrt((x-other.x)*(x-other.x)+(y-other.y)*(y-other.y));
-	}
-};
-struct Triangle
-{
-	Point p1;
-	Point p2;
-	Point p3;
-};
-
-int getPer(const Triangle& t)
-{
-	return t.p1.getDistTo(t.p2) + t.p2.getDistTo(t.p3) + t.p3.getDistTo(t.p1);
-}
- ```
-
-## Копиращ конструктор и оператор =
-Заедно с конструктора по подразбиране и деструктора във всеки клас се дефинират и следните член-функции:
- -  Копиращ конструктор - конструктор, който приема обект от същия клас и създава новият обект като негово копие.
- - Оператор= - функция/оператор, който приема  обект от същия клас и променя данните на съществуващ обект от същия клас (обектът от който извикваме функцията.
-
-**Забележка:** Копиращият конструктор създава нов обект, а оператор= модифицира вече съществуващ такъв!
-
- ```c++
-
-#include <iostream>
-
-using namespace std;
-
-struct Test 
-{
-
-	Test()
-	{
-	cout << "Default constructor" <<endl;
-	}
-
-	Test(const Test& other)
-	{
-	cout << "Copy constructor" <<endl;
-	}
-
-	Test& operator=(const Test& other)
-	{
-	cout << "operator=" <<endl;
-	}
-
-	~Test()
-	{
-	cout << "Destructor" <<endl;
-	}
-};
-
-void f(Test object)
-{
-	//do Stuff
-}
-
-
-void g(Test& object)
-{
-	//do Stuff
-}
-int main()
-{
-    Test t; //Default constructor;
-	
-    Test t2(t)  // Copy constructor
-    Test t3(t2) // Copy constructor	
-    Test t2 = t3 // operator=
-    Test t3 = t //  operator=
-    
-    Test newTest = t; //Copy constructor !!!!!!!
-	
-    f(t); // Copy constructor	
-    g(t); // nothing. We are passing it as a reference. We are not copying it!
-    
-    Test* ptr = new Test();  // Default constructor // we create a new object in the dynamic memory. The destructor must be invoked explicitly  (with delete)
-	
-    delete ptr; // Destructor	
-	 
-} //Destructor Destructor Destructor Destructor
-
- ```
- 
-## Задачи
-
-**Задача 1:**
-Реализирайте клас **Time**, който ще се използва за работа с часове (13:05:45).
-Вашият клас трябва да има следния интерфейс:
-
- - Подразбиращ се контруктор, който създава часа на **00:00:00**.
- - Конструктор, който приема три параметъра - **час, минути и секунди**.
- - Член-функция, която **добавя/изважда** часове.
- - Член-функция, която **добавя/изважда** минути.
- - Член-функция, която **добавя/изважда** секунди.
- - Член-функция, която връща оставащото време до **полунощ**.
- - Член-функция, която връща дали е **време за вечеря**. В рамките на задачата време за вечеря е между **20:30** и **22:00**.
- - Член-функция, която връща дали е **време за парти**. В рамките на задачата време за парти е между **23:00** и **06:00**.
-  - Член-функция, която приема друг обект от тип **Time** и връща обект от тип **Time**, което е разликата между двете времена. 
-  - Член-функция, която която приема друг обект от тип **Time**  и сравнява двата обекта (по-къснен/по-ранен)
-
-  
-
- ```c++
-
-int main()
-{
-     Time t(12,30,45); //12:30:45
-     Time t2; //00:00:00
-
-     t.addSeconds(15); //12:31:00
-     t.addMinutes(29); // 13:00:00;
-
-     t.isPartyTime(); // false		
-     
-     Time result = t.timeToMidnight(); // 11:00:00
-
-     t2.compareTo(t); //some value that indicates that t2 < t	
-}
- ```
-
-
diff --git a/Sem. 06/Time/Source.cpp b/Sem. 06/Time/Source.cpp
deleted file mode 100644
index e4dd497..0000000
--- a/Sem. 06/Time/Source.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <iostream>
-#include "Time.h"
-
-using namespace std;
-
-
-int main()
-{
-	Time t(12, 30, 30);
-
-	t.print();
-	t.addMinutes(45);
-	t.print();
-}
-\ No newline at end of file
diff --git a/Sem. 06/Time/Time.cpp b/Sem. 06/Time/Time.cpp
deleted file mode 100644
index 9cd8620..0000000
--- a/Sem. 06/Time/Time.cpp
+++ /dev/null
@@ -1,78 +0,0 @@
-#include "Time.h"
-#include <iostream>
-
-Time::Time() : Time(0, 0, 0){}
-
-Time::Time(size_t hours, size_t mins, size_t seconds)
-{
-	setHours(hours);
-	setMins(mins);
-	setSeconds(seconds);
-}
-
-size_t Time::getHours() const
-{
-	return hours;
-}
-size_t Time::getMins() const
-{
-	return mins;
-}
-size_t Time::getSeconds() const
-{
-	return seconds;
-}
-void Time::setHours(size_t hours)
-{
-	if (hours >= 24)
-		hours = 0;
-	this->hours = hours;
-}
-void Time::setMins(size_t mins)
-{
-	if (mins > 59)
-		mins = 0;
-	this->mins = mins;
-}
-void Time::setSeconds(size_t seconds)
-{
-	if (seconds > 59)
-		seconds = 0;
-	this->seconds = seconds;
-}
-void Time::print()
-{
-	std::cout << hours << ":" << mins << ":" << seconds << std::endl;
-}
-
-void Time::addSeconds(size_t seconds)
-{
-	size_t currentTimeSeconds = convertTimeToSeconds();
-
-	currentTimeSeconds += seconds;
-
-	setTimeBySeconds(currentTimeSeconds);
-
-}
-void Time::addMinutes(size_t minutes)
-{
-	addSeconds(60 * minutes);
-}
-void Time::addHours(size_t hours)
-{
-	addMinutes(60 * hours);
-}
-size_t Time::convertTimeToSeconds()
-{
-	return hours * 3600 + mins * 60 + seconds;
-}
-void Time::setTimeBySeconds(size_t seconds) //12000
-{
-	hours = seconds / 3600;
-	seconds %= 3600;
-
-	mins = seconds / 60;
-	seconds %= 60;
-
-	this->seconds = seconds;
-}
-\ No newline at end of file
diff --git a/Sem. 06/Time/Time.h b/Sem. 06/Time/Time.h
deleted file mode 100644
index 3789910..0000000
--- a/Sem. 06/Time/Time.h
+++ /dev/null
@@ -1,27 +0,0 @@
-class Time
-{
-	size_t hours;
-	size_t mins;
-	size_t seconds;
-
-	size_t convertTimeToSeconds();
-	void setTimeBySeconds(size_t);
-
-public:
-	Time();
-	Time(size_t hours, size_t mins, size_t seconds);
- 
-
-	size_t getHours() const;
-	size_t getMins() const;
-	size_t getSeconds() const;
-	void setHours(size_t hours);
-	void setMins(size_t mins);
-	void setSeconds(size_t seconds);
-
-	void addSeconds(size_t seconds);
-	void addMinutes(size_t seconds);
-	void addHours(size_t seconds);
-
-	void print();
-};
diff --git a/Sem. 07/Person/Person.cpp b/Sem. 07/Person/Person.cpp
deleted file mode 100644
index 2786671..0000000
--- a/Sem. 07/Person/Person.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-#include <iostream>
-#include "Person.h"
-
-Person::Person(const char* name, int age)
-{
-	setName(name);
-	setAge(age);
-}
-
-
-void Person::setName(const char* name)
-{
-	if (strlen(name) >= 20)
-	{
-		strcpy(this->name, "Unknown");
-	}
-	else
-	{
-		strcpy(this->name, name);
-	}
-}
-
-void Person::setAge(int age)
-{
-	if (age<0 || age > 120)
-		age = 40;
-	this->age = age;
-}
-const char* Person::getName() const
-{
-	return name;
-}
-int Person::getAge() const
-{
-	return age;
-}
-void Person::print()
-{
-	std::cout << name << " " << age << std::endl;
-}
-\ No newline at end of file
diff --git a/Sem. 07/Person/Person.h b/Sem. 07/Person/Person.h
deleted file mode 100644
index 499c744..0000000
--- a/Sem. 07/Person/Person.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#pragma once
-
-class Person
-{
-public:
-	Person(const char* name, int age);
-
-	void setName(const char* name);
-	void setAge(int age);
-
-	const char* getName() const;
-	int getAge() const;
-
-	void print();
-
-private:
-	char name[20];
-	int age;
-};
diff --git a/Sem. 07/Person/Source.cpp b/Sem. 07/Person/Source.cpp
deleted file mode 100644
index 478d07a..0000000
--- a/Sem. 07/Person/Source.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <iostream>
-#include "Person.h"
-using namespace std;
-
-int main()
-{
-	Person p("Ivan", 13);
-	Person p2("Petur", 12);
-
-	p = p2;
-
-	p2.setName("Aleks");
-	p.print();
-	p2.print();
-
-} 
diff --git a/Sem. 07/PersonAdvanced/PersonAdvanced.cpp b/Sem. 07/PersonAdvanced/PersonAdvanced.cpp
deleted file mode 100644
index e4e062f..0000000
--- a/Sem. 07/PersonAdvanced/PersonAdvanced.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "PersonAdvanced.h"
-#include <iostream>
-
-PersonAdvanced::PersonAdvanced(const char* name, int age) : name(nullptr), age(age)
-{
-	setName(name);
-	setAge(age);
-}
-
-PersonAdvanced::PersonAdvanced(const PersonAdvanced& other)
-{
-	copyFrom(other);
-}
-
-PersonAdvanced& PersonAdvanced::operator = (const PersonAdvanced& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-PersonAdvanced::~PersonAdvanced()
-{
-	free();
-}
-
-const char* PersonAdvanced::getName() const
-{
-	return name;
-}
-
-int PersonAdvanced::getAge() const
-{
-	return age;
-}
-
-void PersonAdvanced::setName(const char* name)
-{
-	delete[] this->name;
-	this->name = new char[strlen(name) + 1];
-	strcpy(this->name, name);
-}
-void PersonAdvanced::setAge(int age)
-{
-	if (age < 0 || age > 120)
-		age = 40;
-	this->age = age;
-}
-
-
-void PersonAdvanced::copyFrom(const PersonAdvanced& other)
-{
-	name = new char[strlen(other.name) + 1];
-	strcpy(name, other.name);
-
-	age = other.age;
-}
-void PersonAdvanced::free()
-{
-	delete[] name;
-	age = 0;
-}
-
-void PersonAdvanced::print()
-{
-	std::cout <<"Name: "<< name << ", age: " << age << std::endl;
-}
-\ No newline at end of file
diff --git a/Sem. 07/PersonAdvanced/PersonAdvanced.h b/Sem. 07/PersonAdvanced/PersonAdvanced.h
deleted file mode 100644
index 92e000e..0000000
--- a/Sem. 07/PersonAdvanced/PersonAdvanced.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#pragma once
-
-class PersonAdvanced
-{
-public:
-	PersonAdvanced(const char* name, int age);
-
-	PersonAdvanced(const PersonAdvanced& other);
-	PersonAdvanced& operator=(const PersonAdvanced& other);
-	~PersonAdvanced();
-
-	void setName(const char* name);
-	void setAge(int age);
-
-	const char* getName() const;
-	int getAge() const;
-
-	void print();
-
-private:
-
-	void copyFrom(const PersonAdvanced& other);
-	void free();
-
-
-	char* name;
-	int age;
-};
diff --git a/Sem. 07/PersonAdvanced/Source.cpp b/Sem. 07/PersonAdvanced/Source.cpp
deleted file mode 100644
index 8c92e6c..0000000
--- a/Sem. 07/PersonAdvanced/Source.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <iostream>
-#include "PersonAdvanced.h"
-using namespace std;
-
-int main()
-{
-	PersonAdvanced p("Ivan", 13);
-	PersonAdvanced p2("Petur", 12);
-
-	p = p2;
-
-	p2.setName("Aleks");
-	p.print();
-	p2.print();
-
-} 
diff --git a/Sem. 07/README.md b/Sem. 07/README.md
deleted file mode 100644
index 1d3b9a6..0000000
--- a/Sem. 07/README.md
+++ /dev/null
@@ -1,121 +0,0 @@
-# Голямата четворка (Rule of four)
-
- - Конструктор по подразбиране (конструктор без параметри)
- - Конструктор за копиране
- - Оператор =
- - Деструктор
- 
-Да разгледаме следната структура:
-```c++
-struct Test
-{
-	char str[20];
-	A obj2;
-	B obj3;
-};
- ```
- Понеже функциите (от голямата четворка) не са дефинирани в структурата, то компилаторът ще създаде такива:
- ```c++
-int main()
-{
-	Test currentObject; //default constructor
-	 
-	Test object2(currentObject); //copy constructor
-	 
-	currentObject = object2; //operator =
-
-} //destructor (x2)
- ```
- Кодът се компилира успешно и функциите имат правилно поведение.
-###  Как работят дефинираните от компилатора функции?
- Всяка една от тезу функции **извиква рекурсивно същите функции връху член-данните.**
- ####  Пример за конструктора по подразбиране:
- 
-![enter image description here](https://i.ibb.co/s2m8XtC/1.png)
- 
-  ####  Пример за деструктора:
-![enter image description here](https://i.ibb.co/kmYSzP7/2.png)
-
- ####  Пример за копиращия конструктор:
-![enter image description here](https://i.ibb.co/9Vqk7Mn/3.png)
-### Проблем при функциите, генерирани от компилатора:
-
-Да разгледаме следния код:
-
- ```c++
-struct Person
-{
-	PersonA(const char* name, int age)
-	{
-		this->name = new char[strlen(name) + 1];
-		strcpy(this->name, name);
-		this->age = age;
-	}
-private:
-
-	char* name;
-	int age;
-};
-
-int main()
-{
-	Person p1;
-	Person p2(p1);
-}
-
- ```
- Горното извикване на копиращия конструктор има **грешено поведение**:
-
-![enter image description here](https://i.ibb.co/q5rfGBf/Capture.png)
-
-
-Това е **shallow copy**. В p2 са се копирали стойностите на p1, което довежда до споделяне на една и съща динамична памет.
-В тази ситуация ще трябва да се имплементират експлицитно **копиращия конструктор, оператора за присвояване и деструктора**, защото генерираните от компилатора не биха работили правилно.
-
-**Правилното поведение** на копиращия конструктор е следното:
-
-![enter image description here](https://i.ibb.co/XZq5rGT/33.png)
-
-### Собствена имплементация на функциите за копиране и деструктора
-
- ```c++
-struct Person
-{
-	Person(const char* name, int age) : name(nullptr), age(age)
-	{
-		setName(name);
-		setAge(age);
-	}
-
-	Person(const Person& other)
-	{	
-		copyFrom(other); // копираме
-	}
-
-	Person& operator=(const Person& other)
-	{
-		if (this != &other)
-		{
-			free(); //трием
-			copyFrom(other); //копираме
-		}
-		return *this;
-	}
-	~Person()
-	{
-		free(); //трием
-	}
-	
-	.
-	.
-	.
-	
-	
-
-};
-
- ```
-
-При всички класове, които използват динамична памет, тези функции изглеждат по този начин. Разликите са в имплементациите на функциите **free** и **copyFrom**.
-
-
diff --git a/Sem. 08/Complex/Complex.cpp b/Sem. 08/Complex/Complex.cpp
deleted file mode 100644
index c604d0a..0000000
--- a/Sem. 08/Complex/Complex.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-#include "Complex.h"
-
-Complex::Complex()
-{
-	real = 0;
-	im = 0;
-}
-Complex::Complex(double real, double im)
-{
-	this->real = real;
-	this->im = im;
-}
-Complex& Complex::operator+=(const Complex& other)
-{
-	real += other.real;
-	im += other.im;
-	return *this;
-}
-Complex& Complex::operator-=(const Complex& other)
-{
-	real -= other.real;
-	im -= other.im;
-	return *this;
-}
-Complex& Complex::operator*=(const Complex& other)
-{
-	int oldReal = real;
-	real = real*other.real - im*other.im;
-	im = oldReal*other.im + im * other.real;
-	return *this;
-}
-Complex& Complex::operator/=(const Complex& other) // a/=b
-{
-	Complex Conjugated = other.getConjugated(); //взимаме комплексно спрегнатата на другата дроб (b)
-
-	Complex otherCopy(other);// копираме другата (b), за да не я промяняме.
-
-	//Умножаваме двете по комплексно спрегнатата.
-	*this *= Conjugated;
-	otherCopy *= Conjugated; //Тук трябва да остане само реална част.
-
-	if (otherCopy.real != 0)
-	{
-		real /= otherCopy.real;
-		im /= otherCopy.real;
-	}
-
-	return *this;
-}
-
-
-//След дефинирането на +=, -=, *= и /=, можем лесно да дефинираме +, -, * и /, преизползвайки вече написаните опратори.
-Complex operator+(const Complex& lhs, const Complex& rhs) { //a+b
-
-	Complex result(lhs); // Създаваме нов обект, който е копие на a (използваме копи-конструктора)
-	result += rhs; //към копието на a, добавяме b (Използваме вече дефинирания оператор +=)
-
-	return result;
-}
-//Операторите -, *, / са аналогични с +. 
-Complex operator-(const Complex& lhs, const Complex& rhs) {
-	Complex result(lhs);
-	result -= rhs;
-
-	return result;
-}
-
-Complex operator*(const Complex& lhs, const Complex& rhs) {
-
-	Complex result(lhs);
-	result *= rhs;
-
-	return result;
-}
-
-Complex operator/(const Complex& lhs, const Complex& rhs) {
-
-	Complex result(lhs);
-	result /= rhs;
-
-	return result;
-}
-
-Complex Complex::getConjugated() const
-{
-	Complex result(*this);
-	result.im *= -1;
-
-	return result;
-}
-
-// за да можем да правим  cout<<c1 или да запазваме във файл и др. 
-std::ostream& operator<<(std::ostream& ofs, const Complex& r) {
-
-	return ofs << r.real << ' ' << r.im << 'i';
-}
-
-// за да можем да правим cin>>c1 или да четем от файл и др. 
-std::istream& operator>>(std::istream& ifs, Complex& r) {
-
-	return ifs >> r.real >> r.im;
-}
diff --git a/Sem. 08/Complex/Complex.h b/Sem. 08/Complex/Complex.h
deleted file mode 100644
index d76a2f3..0000000
--- a/Sem. 08/Complex/Complex.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <iostream>
-class Complex
-{
-private:
-	double real;
-	double im;
-
-public:
-	Complex();
-	Complex(double real, double im);
-
-	Complex getConjugated() const;  //връща комплексно спрегнатото число на текущия обект.
-
-	//assignment operators 
-	// a+=b Към а се добавя стойността на b. а се променя , b не се. Операцията  ще върне a за да може да се правят верижни изрази (a+=b+=c)
-	Complex& operator+=(const Complex&);
-	Complex& operator-=(const Complex&);
-	Complex& operator*=(const Complex&);
-	Complex& operator/=(const Complex&);
-
-
-
-	//stream opeartors   ( std::cout>> c1)  (std::cin<<c1 )
-	friend std::ostream& operator<<(std::ostream&, const Complex&);
-	friend std::istream& operator>>(std::istream&, Complex&);
-
-};
-// a+b. Операторът връща НОВА променлива(Complex), която е резултатът от операцията.
-Complex operator+(const Complex&, const Complex&);
-Complex operator-(const Complex&, const Complex&);
-Complex operator*(const Complex&, const Complex&);
-Complex operator/(const Complex&, const Complex&);
-
-
diff --git a/Sem. 08/Complex/Source.cpp b/Sem. 08/Complex/Source.cpp
deleted file mode 100644
index 32f9e17..0000000
--- a/Sem. 08/Complex/Source.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-#include "Complex.h"
-
-int main()
-{
-	Complex  c(3, 4);
-	Complex c2(3, 4);
-
-	std::cout << c* c2;
-}
diff --git a/Sem. 08/Nvector/Nvector.cpp b/Sem. 08/Nvector/Nvector.cpp
deleted file mode 100644
index b4f983d..0000000
--- a/Sem. 08/Nvector/Nvector.cpp
+++ /dev/null
@@ -1,176 +0,0 @@
-#include "Nvector.h"
-
-Nvector::Nvector(size_t n) : size(n)
-{
-	data = new int[n];
-
-	for (int i = 0; i < n; i++)
-		data[i] = 0;
-}
-
-Nvector::Nvector(const Nvector& other)
-{
-	copyFrom(other);
-}
-
-Nvector& Nvector::operator=(const Nvector& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Nvector::~Nvector()
-{
-	free();
-}
-
-void Nvector::copyFrom(const Nvector& other)
-{
-	size = other.size;
-	data = new int[size];
-
-	for (int i = 0; i < size; i++)
-		data[i] = other.data[i];
-}
-void Nvector::free()
-{
-	delete[] data;
-	size = 0;
-}
-
-
-
-//v += v1;
-Nvector& Nvector::operator+=(const Nvector& other)
-{
-	if (size != other.size)
-		throw "The vectors should have the same size!";
-
-	for (int i = 0; i < size; i++)
-		data[i] += other.data[i];
-
-	return *this;
-}
-
-Nvector& Nvector::operator-=(const Nvector& other)
-{
-	if (size != other.size)
-		throw "The vectors should have the same size!";
-
-	for (int i = 0; i < size; i++)
-		data[i] -= other.data[i];
-	
-	return *this;
-}
-
-const Nvector operator+(const Nvector& lhs, const Nvector& rhs)
-{
-	Nvector lhsCopy(lhs);
-	lhsCopy += rhs;
-
-	return lhsCopy;
-}
-
-const Nvector operator-(const Nvector& lhs, const Nvector& rhs)
-{
-	Nvector lhsCopy(lhs);
-	lhsCopy -= rhs;
-
-	return lhsCopy;
-}
-
-int& Nvector::operator[](size_t index)
-{
-	if (index >= size)
-		throw "Invalid index";
-
-	return data[index];
-}
-
-int Nvector::operator[](size_t index) const
-{
-	if (index >= size)
-		throw "Invalid index";
-
-	return data[index];
-}
-
-size_t Nvector::operator~() const
-{
-	return size;
-}
-
-std::ostream& operator<<(std::ostream& os, const Nvector& v)
-{
-	os << "[ ";
-	for (int i = 0; i < v.size; i++)
-		os << v[i] << " ";
-	os << " ]";
-
-	return os;
-}
-
-std::istream& operator>>(std::istream& is, Nvector& v)
-{
-	for (int i = 0; i < v.size; i++)
-		is >> v[i];
-
-	return is;
-}
-
-bool operator||(const Nvector& lhs, const Nvector& rhs)
-{
-	if (~lhs != ~rhs)
-		return false;
-
-	double coef = (double)lhs[0] / rhs[0];
-
-	double eps = 0.01;
-
-	for (int i = 1; i < ~lhs; i++)
-	{
-		double currCoef = (double)lhs[i] / rhs[i];
-
-		if (abs(currCoef - coef) > eps)
-			return false;
-	}
-	return true;
-}
-
-Nvector& Nvector::operator*=(size_t scalar)
-{
-	for (int i = 0; i < size; i++)
-		data[i] *= scalar;
-
-	return *this;
-}
-
-const Nvector operator*(const Nvector& lhs, size_t scalar)
-{
-	Nvector copy(lhs);
-	copy *= scalar;
-	return copy;
-}
-const Nvector operator*(size_t scalar, const Nvector& lhs)
-{
-	return lhs * scalar;
-}
-size_t operator%(const Nvector& lhs, const Nvector& rhs)
-{
-	if (~lhs != ~rhs)
-		throw "The vectors should have the same size!";
-
-	size_t res = 0;
-	for (int i = 0; ~lhs; i++)
-		res += lhs[i] * rhs[i];
-
-	return res;
-}
-
-size_t operator|=(const Nvector& lhs, const Nvector& rhs)
-{
-	return  lhs % rhs == 0; //the size check is done by %
-}
-\ No newline at end of file
diff --git a/Sem. 08/Nvector/Nvector.h b/Sem. 08/Nvector/Nvector.h
deleted file mode 100644
index 745a844..0000000
--- a/Sem. 08/Nvector/Nvector.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#pragma once
-#include <iostream>
-
-class Nvector
-{
-private:
-	int* data;
-	size_t size;
-
-	void copyFrom(const Nvector& other);
-	void free();
-
-public:
-	Nvector(size_t size);
-
-	Nvector(const Nvector& other);
-	Nvector& operator=(const Nvector& other);
-	~Nvector();
-
-	Nvector& operator+=(const Nvector& other);
-	Nvector& operator-=(const Nvector& other);
-
-	Nvector& operator*=(size_t scalar);
-
-	int& operator[](size_t); //get set
-	 
-	int operator[](size_t) const; // get
-
-	void print();
-
-	size_t operator~() const;//ize;
-
-	friend std::ostream& operator<<(std::ostream& os, const Nvector& v);
-	friend std::istream& operator>>(std::istream&, Nvector& v);
-};
-
-const Nvector operator+(const Nvector& lhs, const Nvector& rhs);
-const Nvector operator-(const Nvector& lhs, const Nvector& rhs);
-
-const Nvector operator*(const Nvector& lhs, size_t scalar);
-//So it could be commutative. Is there a better way?
-const Nvector operator*(size_t scalar, const Nvector& lhs);
-
-//are parallel
-bool operator||(const Nvector& lhs, const Nvector& rhs);
-
-
-//scalar product
-size_t operator%(const Nvector& lhs, const Nvector& rhs);
-
-//are perpendicular
-bool operator||(const Nvector& lhs, const Nvector& rhs);
-\ No newline at end of file
diff --git a/Sem. 08/Nvector/Source.cpp b/Sem. 08/Nvector/Source.cpp
deleted file mode 100644
index 291b683..0000000
--- a/Sem. 08/Nvector/Source.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-#include <iostream>
-#include <fstream>
-#include "Nvector.h"
-
-using namespace std;
-
-
-
-int main()
-{
-	Nvector v(3);
-	v[2] = 10;
-	Nvector v2 =  3 * v;
-	cout << v2;
-	
-}
-
diff --git a/Sem. 08/Nvector/TwoDimCoordSystem.cpp b/Sem. 08/Nvector/TwoDimCoordSystem.cpp
deleted file mode 100644
index e7a7072..0000000
--- a/Sem. 08/Nvector/TwoDimCoordSystem.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "TwoDimCoordSystem.h"
-
-TwoDimCoordSystem::TwoDimCoordSystem(const Nvector& v1, const Nvector& v2) : v1(v1), v2(v2)
-{
-	if (~v1 != 2 || ~v2 != 2)
-		throw "Size of vectors should be 2!";
-	if (v1 || v2)
-		throw "Vectors should not be parallel!";
-}
-
-Nvector TwoDimCoordSystem::getVectorByCoordinates(size_t coordX, size_t coordY) const
-{
-	//todo
-}
-Nvector TwoDimCoordSystem::getCoordinatesByVector(const Nvector& other) const
-{
-	//todo
-}
-\ No newline at end of file
diff --git a/Sem. 08/Nvector/TwoDimCoordSystem.h b/Sem. 08/Nvector/TwoDimCoordSystem.h
deleted file mode 100644
index a2fdbfe..0000000
--- a/Sem. 08/Nvector/TwoDimCoordSystem.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#include "Nvector.h"
-class TwoDimCoordSystem
-{
-	Nvector v1;
-	Nvector v2;
-
-	TwoDimCoordSystem(const Nvector& v1, const Nvector& rhs);
-
-	Nvector getVectorByCoordinates(size_t coordX, size_t coordY) const;
-	Nvector getCoordinatesByVector(const Nvector& other) const;
-};
-\ No newline at end of file
diff --git a/Sem. 08/README.md b/Sem. 08/README.md
deleted file mode 100644
index 41e40f4..0000000
--- a/Sem. 08/README.md
+++ /dev/null
@@ -1,161 +0,0 @@
-# Предефиниране на оператори. Приятелски класове и функции.
-## Oператори
-### Видове оператори.
-в C++ има два вида оператори:
-
- - Унарни (на един аргумент)
- - Бинарни (на два аргумента)
-
-
-### Операторите се характеризират с:
- -  Приоритет 
- -  Асоциативност 
- -  Позиция на оператора спярмо аргумента - *префиксен*, *инфиксен* и *суфиксен*
-
-### Списъка на операторите в C++:
-| Оператор                                       | Асоциативност                   |
-|------------------------------------------------|---------------------------------|
-| () [] -> . ++ - -                              |         лявоасоциативен       |
-|  + - ! ~ ++ - - (type)* & sizeof               |         дясноасоциативен      |
-| * / %                                          | лявоасоциативен     |
-|  + -        									 |      лявоасоциативен|
-|    << >>      								 |      лявоасоциативен|
-|  <  <=  >  >=         						 |      лявоасоциативен|
-|    ==  !=       								 |      лявоасоциативен|
-|      &     									 |     лявоасоциативен |
-|     ^      									 |     лявоасоциативен |
-|      \|     									 |      лявоасоциативен|
-|       &&    									 |      лявоасоциативен|
-|      \|\|     									 |      лявоасоциативен|
-|      ?:    									 |      дясноасоциативен         |
-|     =  +=  -=  *=  /=  %=  >>=  <<=  &=  ^=    |      дясноасоциативен         |
-
-### Предефиниране на оператор (пример)
-```c++
-Complex& Complex::operator+=(const Complex& other)
-{
-	real += other.real;
-	im += other.im;
-	return *this;
-}
- ```
-Вече може да правим следното:
-```c++
-ina main()
-{
-	Complex c(1,3); //1 + 3i;
-	Complex c2(10,20) // 10 + 2i;
-	c += c2 // now c is 11 + 5i
-}
- ```
-При предефинирането на оператор **не могат** да се променят *приоритетът*, *асоциативността*, броят и позицията на *аргументите* му.
-
-## Приятелски класове и приятелски функции
-Декларират се с на запазената дума **friend** пред прототипа на функцията.  
-Даденият friend-клас/фунцкия има достъп до всички компоненти на класа. 
-Т.е. всички членове на класа са public за friend-класовете/функциите приятели.
-### Приятелски функции (пример)
-
- ```c++
-class Complex
-{
-
-private:
-	double real;
-	double im;
-public:
-	friend double getModulos(const Complex& other);
-	.
-	.
-	.
-}
- ```
-  ```c++
-
-double getModulos(const Complex& other)
-{
-	return sqrt((other.real – other.real) * (other.real – other.real) + (other.im – other.im ) * (other.im – other.im));
-}
-
-```
-## Задачи
-
-**Задача 1:**
-Реализирайте клас **Nvector**, който ще се използва за работа с математически вектор.
-Предефинирайте оператори със следната функционалност:
- - Събиране на вектори.
- - Изваждане на вектори.
- - Умножение на вектор със скалар.
- - Проверка дали два вектора са успоредни.
- - Проверка дали два вектора са перпендикулярни.
- - Взимане на дължина на вектор.
- - Достъп до произволен елемент на вектор.
- - Вход и изход от потоци.
-
- ```c++
-int main()
-{
-	Nvector v(4);
-	cin >> v;
-
-	Nvector v2(4);
-	cin >> v;
-
-	Nvector result = v + v2;
-
-	cout << result << endl;
-      
-}
- ```
- Релизирайте клас двумерната декартова координатна система, която приема 2 вектора, които са нейният базис.
- Реализрайте следните функции:
- - Връща вектор в базиса по подадени 2 координата.
- - По подаден вектор връща координатите му в базиса.
- 
- ```c++
-int main()
-{
-	Nvector v(4);
-	v[0] = 2;
-	v[1] = 1;
-	
-	Nvector v2(4);
-	v2[0] = 3;
-	v2[1] = 1;
-	
-	twoDimCoordSystem s(v1, v2);
-	
-	cout << s1.getVectorByCoordinates(7, 4); // [26, 11]
-
-	cout << s1.getCoordinatesByVector(7, 4); // [5, -1]
-
-	cout << result << endl;
-      
-}
- ```
- 
- **Задача 2:**
-Реализирайте клас **Complex**, който ще се използва за работа с комплексни числа.
-Предефинирайте оператори със следната функционалност:
- - Събиране на комплексни числа.
- - Изваждане на комплексни числа.
- - Умножение на комплексни числа.
- - Деление на комплексни числа
- - Вход и изход от потоци.
-
-```c++
-
-
-int main()
-{
-	Complex c;
-	cin >> c;
-
-	Complex c2;
-	cin >> c2;
-
-	Complex result = c2 / c;
-
-	cout << result << endl;
-}
- ```
diff --git a/Sem. 09/README.md b/Sem. 09/README.md
deleted file mode 100644
index 3ec48cc..0000000
--- a/Sem. 09/README.md
+++ /dev/null
@@ -1,230 +0,0 @@
-# Композиция на обекти. Масиви от обекти. Шаблони.
-## Композиция
-Композиция – класове като елементи на други класове (влагане на класове) Един клас може да включва в себе си обекти от други класове като член-данни. Когато обект от даден клас се дефинира, автоматично се извиква неговият конструктор. Ако класът съдържа член-данни, в неговия конструктор трябва да се укаже кои конструктори на член-данните да се извикват.
-#### Пример 1
-```c++
-class A
-{
- .
- .
- .
-}
-class B
-{
-	 int n;
-	 A obj;
-}
- ```
-В тази ситуация се извикват **default-ните те конструктори на n и obj**.
-#### Пример 2
-```c++
-class A
-{
-	A(int a, int b)
- .
- .
- .
-}
-class B
-{
-	B() : A(1, 2)
-	{}
-	
-	int n;
-	A obj;
-}
- ```
-Тук A няма default-ен конструктор. Това означава, че в конструктора на B трябва да се извика **експлицитно** някой от неговите конструктори
-### Композиция на обекти с динамична памет
-Когато имаме композиция и в главния клас има динамично заделяне на памет, то трябва в реализацията на копи-конструктора и оператор=  **експлицитно** да се извикват копи-конструкторите и оператора = за всички член-данни (композирани обекти). 
-```c++
-class B;
-
-class A
-{
-	void copyFrom(const A& other)
-	{
-		arr = new int[other.size];
-		for (int i = 0; i < other.size; i++)
-			arr[i] = other.arr[i];
-		size = other.size;
-	}
-	void free()
-	{
-		delete[] arr;
-	}
-
-public:
-	B nestedObject;
-	int* arr; //dynamic array
-	size_t size; 
-  
-	A(int n) : size(n)
-	{
-		arr = new int[n];
-	}
-	A(const A& other) : nestedObject(other.objTest), size(other.size)
-	{
-		copyFrom(other);
-	}
-	A& operator=(const A& other)
-	{
-		nestedObject= other.nestedObject;
-		size = other.size;
-
-		if (this != &other)
-		{
-			free();
-			copyFrom(other);
-		}
-		return *this;
-	}
-
-	~A()
-	{
-		free();
-	}
-};
- ```
- **ВАЖНО**: Деструкторите на член-данните **НЕ** трябва да се извикват експлицитно в деструктора на класа.
-
-## Масиви от обекти
-#### Статичен масив от обекти
- 
-```c++
-class A;
-int main()
-{
-	A arr[5]; //5 def. constr.
-} //5 destr
- ```
-Създава **статичен** масив с 5 обекта от тип A. На всеки от тях се е извикал конструктора по подразбиране.
-Масивът ще се изтрие, когато приключи функцията.
-#### Статичен масив от указатели към обекти
-```c++
-class A;
-int main()
-{
-	A* arr[10]; //5 empty pointers.
-	
-	arr[0] = new A();
-	arr[2] = new A();
-	
-	delete arr[0];
-	delete arr[2];
-}
- ```
-Създава **статичен** масив с 5 указателя . Само на 2 от тези указатели присвояваме обекти, които са заделени в динамичната памет.
-Масивът ще се изтрие, когато приключи функцията.
-#### Динамичен масив от обекти
-```c++
-class A;
-int main()
-{
-	A* arr = new A[5]; //5 def constr.
-	delete[] arr; //5 destr
-} 
- ```
-Създава **динамичен** масив с 5 обекта от тип A. На всеки от тях се е извикал конструктора по подразбиране.
-Масивът ще се изтрие (и ще се изтрият обектите), когато се извика delete[] върху него.
-
-#### Динамичен масив от указатели към обекти
-```c++
-class A;
-int main()
-{
-	A** arr = new A*[5]; //5 empty pointers.
-	
-	arr[0] = new A(); //def constr. 
-	arr[2] = new A(); //def constr.
-	
-	delete arr[0]; //destr.
-	delete arr[2]; //destr.
-	
-	delete[] arr;
-}
- ```
- Създава **динамичен** масив с 5 указателя . Само на 2 от тези указатели присвояваме обекти, които са заделени в динамичната памет.
-Масивът ще се изтрие (и ще се изтрият обектите), когато се извика delete[] върху него.
-
-
-
-## Задачи
-
-**Задача 1:**
-Трябва да реализирате библиотека за работа с факултатитен курс. 
-Курсът ще има преподаватели - лектор и асистенти - имената им се приемат като параметри.
-Асистентите могат да са най-много 3.
-
-**Пример**:
- ```c++
-int main()
-{
-	OOPcourse p("Lecturer1", "Assistant1");
-	
-	p.addStudent("Ivan Petrov", 45123);
-	p.addStudent("Aleksandur Mironov", 45123);
-	p.addStudent("Stefan Popov", 45123);
-	
-	p.addGrade(45123, "HW1", 4, "Assistant1");
-	p.addGrade(45222, "HW1", 6, "Lecturer1");
-	p.addGrade(45222, "K1", 5, "Assistant1");
-	
-	p.getAverage("HW1"); // 4.5;
-	
-	p.removeStudent(45123);
-      
-    p.getAverageGradePerTask("HW1"); // 5;
-	
-	p.getAverageFromTeacher("Lecturer1"); //6
-	
-}
- ```
-Функционални изисквания:
- - Всеки студент трябва да има най-много една оценка за дадено задание.
- - Записана оценка за дадено задание може да се променя, но не може да се изтрива!
- - Във всеки момент трябва да може да се види каква е средната оценка, която е написал лекторът или асистентът.
- - Студент може да има най-много 20 оценки.
- - Студентите имат имена с макс дължина 30 символа.
- 
-
- **Задача 2:**
- Релизирайте клас стринг, който ще се ползва за работа със символни низове. Стрингът трябва да има като минимум следния интерфейс:
- 
-
- - Конструктор по подразбиране (по поразбиране ще е празният низ)
- - Конструктор, който приема константен указател към масив от символи. 
- - Член-функция, която приема друг стринг и връща дали е подстринг на текущия.
- - Член-функция, която приема цяло число k и връща подстринг на текущия, но започващ от k-ти символ
- - Член-функция, която приема две цели числа k и t и връща подстринг на текущия, но започващ от k-ти символ и завършващ на t-ти символ.
- - Предефиниран оператор [] за достъп до произвол символ.
-- Предефиниран оператори + и += за конкатенация на стрингове.
-- Предефиниран оператор *, който приема стринг и цяло число k и мултиплицира съдържаниято на стринга k пъти.
-- Предефинирани оператори << и >>.
-- Предефинирани опратори за сравнение (<, >, <=, >=, ==, !=). Стринговете да се сравняват лексикографско!
-
-**Пример**:
- ```c++
-int main()
-{
-	myString s1; // ""
-	myString s2("Test");
-	
-        s2.substr(2); // st
-
-        s2.substr(1,2); // es
-
-	s1 = "pronto";	
-
-	s2.contains(s1); //false
-	
-	myString s3 = s1 + s2; // prontoTest
-	
-	s3 *= 3; //prontoTestprontoTestprontoTest
-	
-	cin >> s3;
-	cout << s3 << endl;
-	
-	s3 == s1; //false;
-}
- ```
diff --git a/Sem. 09/task1 (not finished)/Grade.cpp b/Sem. 09/task1 (not finished)/Grade.cpp
deleted file mode 100644
index 4302166..0000000
--- a/Sem. 09/task1 (not finished)/Grade.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "Grade.h"
-
-
-Grade::Grade() : taskName(nullptr)
-{
-	setTaskName("Unknown");
-	setGrade(2);
-}
-
-Grade::Grade(const char* taskName, size_t gradeValue) : taskName(nullptr)
-{
-	setTaskName(taskName);
-	setGrade(gradeValue);
-}
-
-void Grade::free()
-{
-	delete[] taskName;
-}
-void Grade::copyFrom(const Grade& other)
-{
-	gradeValue = other.gradeValue;
-
-	taskName = new char[strlen(other.taskName) + 1];
-	strcpy(taskName, other.taskName);
-}
-
-Grade::Grade(const Grade& other)
-{
-	copyFrom(other);
-}
-
-Grade& Grade::operator=(const Grade& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Grade::~Grade()
-{
-	free();
-}
-
-const char* Grade::getTaskName() const
-{
-	return taskName;
-}
-size_t Grade::getGrade() const
-{
-	return gradeValue;
-}
-
-void Grade::setGrade(size_t grade)
-{
-	if (grade < 2 || grade > 6)
-		throw std::exception("error!");
-	
-	gradeValue = grade;
-}
-
-void Grade::setTaskName(const char* name)
-{
-	delete[] taskName;
-	taskName = new char[strlen(name) + 1];
-	strcpy(taskName, name);
-}
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/Grade.h b/Sem. 09/task1 (not finished)/Grade.h
deleted file mode 100644
index d0cb2e7..0000000
--- a/Sem. 09/task1 (not finished)/Grade.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include <iostream>
-
-class Grade
-{
-	size_t gradeValue;
-	char* taskName;
-
-	void free();
-	void copyFrom(const Grade& other);
-public:
-	Grade();
-
-	Grade(const char* taskName, size_t gradeValue);
-
-	Grade(const Grade& other);
-	Grade& operator=(const Grade& other);
-	~Grade();
-
-	const char* getTaskName() const;
-	size_t getGrade() const;
-
-	void setTaskName(const char* name);
-	void setGrade(size_t grade);
-};
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/Student.cpp b/Sem. 09/task1 (not finished)/Student.cpp
deleted file mode 100644
index 99d26dc..0000000
--- a/Sem. 09/task1 (not finished)/Student.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#include "Student.h"
-
-Student::Student(const char* name, size_t fn)
-{
-	setName(name);
-	setFn(fn);
-}
-
-void Student::setFn(size_t fn)
-{
-	if (fn < 80000 || fn > 83000)
-		throw std::exception("Invalid fn");
-
-	this->fn = fn;
-}
-void Student::setName(const char* name)
-{
-	if (strlen(name) > MAX_NAME_LENGTH)
-		throw std::exception("Name is too long!");
-
-	strcpy(this->name, name);
-}
-
-size_t Student::getFN() const
-{
-	return fn;
-}
-const char* Student::getName() const
-{
-	return name;
-}
-
-void Student::addGrade(const char* taskName, size_t grade)
-{
-	if (gradesCount == MAX_GRADES_COUNT)
-		throw std::exception("Error! Too many grades!");
-
-	Grade currentGrade(taskName, grade);
-	grades[gradesCount++] = currentGrade;
-}
-
-void Student::print() const
-{
-	std::cout << name << " " << fn << std::endl;
-}
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/Student.h b/Sem. 09/task1 (not finished)/Student.h
deleted file mode 100644
index 5c09792..0000000
--- a/Sem. 09/task1 (not finished)/Student.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "Grade.h"
-
-const size_t MAX_NAME_LENGTH = 30;
-const size_t MAX_GRADES_COUNT = 20;
-class Student
-{
-public:
-		
-	Student(const char* name, size_t fn);
-
-	void setFn(size_t fn);
-	void setName(const char* name);
-
-	size_t getFN() const;
-	const char* getName() const;
-
-	void addGrade(const char* taskName, size_t grade);
-	
-
-	void print() const;
-private:
-	char name[MAX_NAME_LENGTH + 1];
-	size_t fn;
-	
-	Grade grades[MAX_GRADES_COUNT];
-	size_t gradesCount;
-
-
-};
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/UniCourse.cpp b/Sem. 09/task1 (not finished)/UniCourse.cpp
deleted file mode 100644
index c854b82..0000000
--- a/Sem. 09/task1 (not finished)/UniCourse.cpp
+++ /dev/null
@@ -1,135 +0,0 @@
-#include "UniCourse.h"
-
-UniCourse::UniCourse(const char* lecturerName) : UniCourse(lecturerName, "", "", "")
-{}
-UniCourse::UniCourse(const char* lecturerName, const char* assistant1Name) : UniCourse(lecturerName, assistant1Name, "", "")
-{}
-UniCourse::UniCourse(const char* lecturerName, const char* assistant1Name, const char* assistant2Name) : UniCourse(lecturerName, assistant1Name, assistant2Name, "")
-{}
-
-UniCourse::UniCourse(const char* lecturerName, const char* assistant1Name, const char* assistant2Name, const char* assistant3Name)
-{
-	this->lecturerName = new char[strlen(lecturerName) + 1];
-	strcpy(this->lecturerName, lecturerName);
-
-	assistantsNames[0] = new char[strlen(assistant1Name) + 1];
-	strcpy(assistantsNames[0], assistant1Name);
-
-	assistantsNames[1] = new char[strlen(assistant2Name) + 1];
-	strcpy(assistantsNames[1], assistant2Name);
-
-	assistantsNames[2] = new char[strlen(assistant3Name) + 1];
-	strcpy(assistantsNames[2], assistant3Name);
-
-	capacity = 8;
-	size = 0;
-
-	students = new Student*[capacity];
-}
-
-
-void UniCourse::copyFrom(const UniCourse& other)
-{
-	lecturerName = new char[strlen(other.lecturerName) + 1];
-	strcpy(lecturerName, other.lecturerName);
-
-	for (int i = 0; i < 3; i++)
-	{
-		if (other.assistantsNames[i] != nullptr)
-		{
-			assistantsNames[i] = new char[strlen(other.assistantsNames[i]) + 1];
-			strcpy(assistantsNames[i], other.assistantsNames[i]);
-		}
-	}
-
-
-	students = new Student*[other.capacity];
-
-	for (int i = 0; i < other.size; i++)
-		students[i] = new Student(*other.students[i]);
-
-	capacity = other.capacity;
-	size = other.size;
-
-}
-void UniCourse::free()
-{
-	delete[] lecturerName;
-
-	for (int i = 0; i < 3; i++)
-		delete[] assistantsNames[i];
-
-	for (int i = 0; i < size; i++)
-		delete students[i];
-
-	delete[] students;
-}
-
-UniCourse::UniCourse(const UniCourse& other)
-{
-	copyFrom(other);
-}
-
-UniCourse& UniCourse::operator=(const UniCourse& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-UniCourse::~UniCourse()
-{
-	free();
-}
-void UniCourse::addStudent(const char* name, size_t fn)
-{
-	if (size == capacity)
-		resize();
-
-	Student* current = new Student(name, fn);
-	students[size++] = current;
-}
-
-void UniCourse::resize()
-{
-	Student** temp = new Student*[capacity *= 2];
-
-	for (int i = 0; i < size; i++)
-		temp[i] = students[i];
-
-	delete[] students;
-
-	students = temp;
-}
-
-size_t UniCourse::findStudentByFn(size_t fn)
-{
-	for (int i = 0; i < size; i++)
-	{
-		if (students[i]->getFN() == fn)
-			return i;
-	}
-	return -1;
-}
-void UniCourse::removeStudent(size_t fn)
-{
-	size_t indexOfStudent = findStudentByFn(fn);
-	if (fn == -1)
-		return;
-	
-	delete students[indexOfStudent];
-
-	for (int i = indexOfStudent; i < size - 1; i++)
-		students[i] = students[i + 1];
-
-	size--;
-
-}
-
-void UniCourse::print()
-{
-	for (int i = 0; i < size; i++)
-		students[i]->print();
-}
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/UniCourse.h b/Sem. 09/task1 (not finished)/UniCourse.h
deleted file mode 100644
index fde1518..0000000
--- a/Sem. 09/task1 (not finished)/UniCourse.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#include "Student.h"
-
-class UniCourse
-{
-	char* lecturerName;
-	char* assistantsNames[3];
-
-	Student** students;
-	size_t capacity;
-	size_t size;
-
-	void copyFrom(const UniCourse& other);
-	void free();
-
-	size_t findStudentByFn(size_t fn);
-
-	void resize();
-
-public:
-	UniCourse(const char* lecturerName);
-	UniCourse(const char* lecturerName, const char* assistant1Name);
-	UniCourse(const char* lecturerName, const char* assistant1Name, const char* assistant2Name);
-	UniCourse(const char* lecturerName, const char* assistant1Name, const char* assistant2Name, const char* assistant3Name);
-
-
-	UniCourse(const UniCourse& other);
-	UniCourse& operator=(const UniCourse& other);
-	~UniCourse();
-
-	void addStudent(const char* name, size_t fn);
-	void removeStudent(size_t fn);
-
-	void print();
-
-};
-\ No newline at end of file
diff --git a/Sem. 09/task1 (not finished)/main.cpp b/Sem. 09/task1 (not finished)/main.cpp
deleted file mode 100644
index 6b727fa..0000000
--- a/Sem. 09/task1 (not finished)/main.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "UniCourse.h"
-
-int main()
-{
-	UniCourse u("ddz");
-
-	u.addStudent("ivan", 80123);
-	u.addStudent("angel", 80125);
-	u.addStudent("petur", 80126);
-	u.addStudent("ivan2", 81000);
-	//u.print();
-
-	u.removeStudent(80125);
-	u.print();
-}
-\ No newline at end of file
diff --git a/Sem. 10/README.md b/Sem. 10/README.md
deleted file mode 100644
index 40d6502..0000000
--- a/Sem. 10/README.md
+++ /dev/null
@@ -1,70 +0,0 @@
-## Шаблони
-Функция/клас, която работи не с променливи от някакъв дефиниран тип, а с абстрактни променливи, се нарича шаблонна функция/клас
-```c++
-#include <iostream>
-using namespace std;
-
-template <class T>
-T sum(T a, T b)
-{
-    return a + b;
-}
-
-int main()
-{
-    int a = 4;
-    int b = 9;
-    cout << sum<int>(a, b) << endl;
-
-    double c = 3.14;
-    double d = 4.5;
-    cout << sum<double>(c,d) << endl;
-	
-    return 0;
-}
-```
-Компилаторът генерира т. нар. шаблонна функция, като замества параметрите на шаблона с типовете на съответните фактически параметри.
-
-**Задача 1:**
-Релизирайте структурата от данни опашка. Опашката трябва да работи с **произволни типове**. След като е добавен един елемент в края на опашката, той ще може да бъде извлечен (премахнат) единствено след като бъдат премахнати всички елементи преди него в реда, в който са добавени.
-
-**Пример**:
- ```c++
-int main()
-{
-	quene<int> q;
-	q.enqueue(3);
-	q.enqueue(5);
-	q.enqueue(10);
-
-	cout << q.dequeue() << endl; //3
-	cout << q.dequeue() << endl; //5
-	cout << q.dequeue() << endl; //10
-
-	cout << q.isEmpty() << endl; //1	
-}
- ```
-  **Задача 2:**
- Създайте **шаблонна** опашка с k приоритета. При взимане на елемент от опашката трябва да се връща най-отдавна добавения елемент от тези с най-висок приоритет.
- 
-  ```c++
-int main()
-{
-	kPriorityQueue<char> q(4); // 4 priorities - 0, 1, 2 и 3.
-	
-	q.enqueue('A',0): //adds A with lowest priority: 0
-	q.enqueue('B',3);
-	q.enqueue('C',2);
-	q.enqueue('D',2);
-	q.enqueue('E',1);
-	
-	//q.enqueue('F', 5); //error! No such priority!
-	
-	q.dequeue(); // B
-	q.dequeue(); // C
-	q.dequeue(); // D
-	q.dequeue(); // E
-	q.dequeue(); // A
-}
- ```
-
diff --git a/Sem. 10/task1/Queue.hpp b/Sem. 10/task1/Queue.hpp
deleted file mode 100644
index 1f7f854..0000000
--- a/Sem. 10/task1/Queue.hpp
+++ /dev/null
@@ -1,144 +0,0 @@
-#include <iostream>
-
-template <typename T>
-class Queue
-{
-	T* data;
-	size_t capacity;
-	size_t count;
-
-	size_t head; //where to get
-	size_t tail; //last added element;
-
-	void resize(size_t newCapacity);
-
-	void copyFrom(const Queue<T>& other);
-	void free();
-public:
-	Queue();
-
-	Queue(const Queue<T>& other);
-	Queue<T>& operator=(const Queue<T>& other);
-
-	void enqueue(const T& obj);
-	T dequeue();
-
-	size_t getCount();
-	size_t isEmpty();
-
-	~Queue();
-};
-
-template <typename T>
-Queue<T>::Queue()
-{
-	capacity = 4;
-	data = new T[capacity];
-
-	count = 0;
-	head = tail = 0;
-}
-
-
-
-template <typename T>
-void Queue<T>::enqueue(const T& obj)
-{
-	if (count == capacity)
-		resize(capacity * 2);
-	if (count != 0)
-		tail++;
-
-	tail %= capacity; //so we don't get an out of range exception
-
-	data[tail] = obj;
-
-	count++;
-}
-
-template <typename T>
-T Queue<T>::dequeue()
-{
-	if (count == 0)
-		throw std::exception("The collection is empty!");
-
-	T toReturn = data[head];
-	(++head) %= capacity;
-
-	count--;
-
-	return toReturn;
-}
-
-template <typename T>
-size_t Queue<T>::getCount()
-{
-	return count;
-}
-
-template <typename T>
-size_t Queue<T>::isEmpty()
-{
-	return getCount() == 0;
-}
-
-template <typename T>
-void Queue<T>::resize(size_t newCapacity)
-{
-	T* newData = new T[newCapacity];
-
-	for (int i = 0, ind = head; i < count; i++, (++ind) %= capacity)
-		newData[i] = data[ind];
-
-	delete[] data;
-	capacity = newCapacity;
-	data = newData;
-
-	head = 0;
-	tail = count - 1;
-}
-
-template <typename T>
-void Queue<T>::copyFrom(const Queue<T>& other)
-{
-	data = new T[other.capacity];
-	for (int i = 0; i < other.capacity; i++)
-		data[i] = other.data[i];
-
-	head = other.head;
-	tail = other.tail;
-
-	count = other.count;
-	capacity = other.capacity;
-
-}
-
-template <typename T>
-void Queue<T>::free()
-{
-	delete[] data;
-}
-
-template <typename T>
-Queue<T>::Queue(const Queue<T>& other)
-{
-	copyFrom(other);
-
-}
-
-template <typename T>
-Queue<T>& Queue<T>::operator=(const Queue<T>& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-
-template <typename T>
-Queue<T>::~Queue()
-{
-	free();
-}
diff --git a/Sem. 10/task1/main.cpp b/Sem. 10/task1/main.cpp
deleted file mode 100644
index e52579a..0000000
--- a/Sem. 10/task1/main.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#include <iostream>
-#include "Queue.hpp"
-using namespace std;
-
-
-
-int main()
-{
-	Queue<char> q;
-
-	q.enqueue('A');
-	q.enqueue('B');
-	q.enqueue('C');
-	q.enqueue('D');
-	cout << q.dequeue() << endl;
-	q.enqueue('E');
-	q.enqueue('F');
-	cout << q.dequeue() << endl;
-	cout << q.dequeue() << endl;
-	cout << q.dequeue() << endl;
-	cout << q.dequeue() << endl;
-	cout << q.dequeue() << endl;
-}
-\ No newline at end of file
diff --git a/Sem. 11/README.md b/Sem. 11/README.md
deleted file mode 100644
index 485b956..0000000
--- a/Sem. 11/README.md
+++ /dev/null
@@ -1,129 +0,0 @@
-# Move семантики
-#### Подаване на стойност по референция
-```c++
-#include <iostream>
-using namespace std;
-
-void f(int& n)
-{
-	cout << n << endl;
-}
-int main()
-{
-	int number = 10;
-	f(number); // OK!
-	f(3);      // Error!
-}
- ```
-"Висящата" константа 3 **няма адрес в паметта**. За това подаването и като параметър на функцията f ще доведе до компилационна грешка. 
-
-**&&** - за стойности без адрес в паметта
-```c++
-#include<iostream>
-using namespace std;
-
-void f(int& n)
-{
-	cout << n << endl;
-}
-int main()
-{
-	int number = 10;
-	f(number); // OK!
-	f(3);      // Error!
-}
- ```
-
-#### Пример за използването на &&
-```c++
-#include<iostream>
-using namespace std;
-
-void f(int&& n)
-{
-	cout << n << endl;
-}
-int main()
-{
-	int number = 10;
-	f(number); // Error!
-	f(3);      // OK!
-}
- ```
-Тук грешката възниква при подаването на променлива, която **има адрес в паметта.**
-#### lvalue и rvalue
-
- - **lvalue** - обект, който заема някакво конкретно място в паметта. (стойността в паметта може да се модифицира)
- - **rvalue** - обект, който не е  *lvalue* .
-
-
-#### Излишни копия?
-Да разгледаме следният програмен фрагмент:
- 
-```c++
-#include<iostream>
-#include<iostream>
-#include "Person.h"
-using namespace std;
-
-Person createPerson(const char* name, int age)
-{
-	Person p(name, age);
-
-	return p;
-}
-
-int main()
-{
-	Person p2("Petur",18);
-	p2 = createPerson("Ivan", 23);
-}
- ```
-Тук се изпълняват следните функции на Person:
-
- 1. Конструктор на Person (за p2)
- 2. Конструктор за Person (на p).
- 3. Копиращ конструктор (за *return p*)
- 4. Деструктор (в края на функцията *createPerson*)
- 5. Оператор = (за *p2 = create...* )   
- 6. Деструктор (в края на функцията *main*)
-
-Проблемът тук е, че правим излишни копия.  Обектът създаден в *createPerson* **се копира два пъти докато се присвои** на p2.
-#### Move конструктор и move оператор =.
-За да избегнем излишните копия, може да "преместим" данните на обектът, който се създава във функцията, в данните на p2.
-```c++
-
-//Move constructor
-Person::Person(Person&& rhs)
-{
-	name = rhs.name;
-	age = rhs.age;
-
-	rhs.name = nullptr;
-}
-
-//Move operator=
-Person& Person::operator=(Person&& rhs)
-{
-	if (this != &rhs)
-	{
-		free();
-
-		name = rhs.name;
-		rhs.name = nullptr;
-	}
-	return *this;
-}
- ```
- 
- Важно е да се обърне внимание, че тук данните **не се копират**, а се **местят**. Т.е приемаме, че rhs **няма да се използва след изпълнението на функцията.**
- Сега при изпълнението на първоначално разгледания код:
-  1. Конструктор на Person (за p2)
- 2. Конструктор за Person (на p).
- 3. **Move конструктор** (за *return p*)
- 4. Деструктор (в края на функцията *createPerson*)
- 5. **Move oператор =** (за *p2 = create...* )   
- 6. Деструктор (в края на функцията *main*)
- 
-
-Т.е тук си спестихме 2 копия за динамичната памет в Person.
diff --git a/Sem. 11/example/Person.cpp b/Sem. 11/example/Person.cpp
deleted file mode 100644
index ae78280..0000000
--- a/Sem. 11/example/Person.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-#include "Person.h"
-#include <iostream>
-
-using namespace std;
-
-Person::Person() : Person("Unknown", 0)
-{
-
-}
-Person::Person(const char* name, int age) : name(nullptr), age(age)
-{
-	cout << "Constr" << endl;
-	setName(name);
-	setAge(age);
-}
-
-Person::Person(const Person& other)
-{
-	cout << "copy constr" << endl;
-	copyFrom(other);
-}
-Person::Person(Person&& other)
-{
-	cout << "Move constr" << endl;
-
-	name = other.name;
-	age = other.age;
-
-	other.name = nullptr;
-}
-
-Person& Person::operator=(Person&& other)
-{
-
-	std::cout << "Move op= " << endl;
-	if (this != &other)
-	{
-		free();
-		
-		name = other.name;
-		other.name = nullptr;
-
-		age = other.age;
-
-	}
-	return *this;
-}
-
-Person& Person::operator = (const Person& other)
-{
-	cout << "op =" << endl;
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Person::~Person()
-{
-	cout << "Destructor" << endl;
-	free();
-}
-
-const char* Person::getName() const
-{
-	return name;
-}
-
-int Person::getAge() const
-{
-	return age;
-}
-
-void Person::setName(const char* name)
-{
-	delete[] this->name;
-	this->name = new char[strlen(name) + 1];
-	strcpy(this->name, name);
-}
-void Person::setAge(int age)
-{
-	if (age < 0 || age > 120)
-		age = 40;
-	this->age = age;
-}
-
-void Person::copyFrom(const Person& other)
-{
-	name = new char[strlen(other.name) + 1];
-	strcpy(name, other.name);
-
-	age = other.age;
-}
-void Person::free()
-{
-	delete[] name;
-	age = 0;
-}
-\ No newline at end of file
diff --git a/Sem. 11/example/Person.h b/Sem. 11/example/Person.h
deleted file mode 100644
index 9a404c4..0000000
--- a/Sem. 11/example/Person.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#pragma once
-
-class Person
-{
-public:
-	Person();
-	Person(const char* name, int age);
-
-	Person(const Person& other);
-
-	Person(Person&& other); //move constr
-	
-	Person& operator=(Person&& other); // move op=
-
-	Person& operator=(const Person& other);
-	~Person();
-
-	void setName(const char* name);
-	void setAge(int age);
-
-	const char* getName() const;
-	int getAge() const;
-
-	void print();
-
-
-private:
-
-	void copyFrom(const Person& other);
-	void free();
-
-
-	char* name;
-	int age;
-};
-\ No newline at end of file
diff --git a/Sem. 11/example/main.cpp b/Sem. 11/example/main.cpp
deleted file mode 100644
index 80fef69..0000000
--- a/Sem. 11/example/main.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-#include<iostream>
-#include<iostream>
-#include "Person.h"
-using namespace std;
-
-Person createPerson(const char* name, int age)
-{
-	Person p(name, age);
-
-	return std::move(p);
-}
-
-int main()
-{
-	Person p2("Petur",18);
-	p2 = createPerson("Ivan", 23);
-}
diff --git a/Sem. 12/README.md b/Sem. 12/README.md
deleted file mode 100644
index 5c13eba..0000000
--- a/Sem. 12/README.md
+++ /dev/null
@@ -1,190 +0,0 @@
-
-# Наследяване
-## Пример за наследяване
-
-При създаване на нов клас, който има общи компоненти и поведение с вече дефиниран клас, вместо да дефинира повторно тези компоненти и поведение, можем да го обявим за наследник на вече дефинирания.
-
-```c++
-class A
-{
-	.
-	. 
-	.
-public:
-	void f()
-	{
-	.
-	.
-	.
-	}
-	.
-	.
-	.	
-};
-class B : public A
-{
-	.
-	.
-	.
-}
-
-int main()
-{
-	B obj;
-	obj.f(); // OK!
-}
- ```
- При наследяването:
- - Наследяват се член-данните и методите на основните класове
- - Получава се достъп до **някои** от наследените компоненти на основните класове
-
-
-В нашия пример класът **В е наследник на класа А.** Обекти от класовете изглеждат така:
-
-![enter image description here](https://i.ibb.co/Fshm2LJ/Untitled-Diagram.png)
-
-
-След като  В е наследник на класа А, то при създаване на обект от тип В се създава обект от тип А, **който е част от обекта** от тип В.
-
-
-## Видове наследяване
-Някои типове наследяване в c++:
-
- - private (по подразбиране)
- - protected
- - public
-
-Примери:
-```c++
-class A 
-{
-    public:
-       int x;
-    protected:
-       int y;
-    private:
-       int z;
-};
-
-class B : public A
-{
-    // x is public
-    // y is protected
-    // z is not accessible from B
-};
-
-class C : protected A
-{
-    // x is protected
-    // y is protected
-    // z is not accessible from C
-};
-
-class D : private A    // 'private' is default for classes
-{
-    // x is private
-    // y is private
-    // z is not accessible from D
-};
- ```
-
-## Подаване като параметри на функции.
-Класове-наследници могат да бъдат подавани като параметри на функции, които приемат обекти от базовия клас. Може да се използва функционалността само от базовия клас.
-
-```c++
-class A
-{
-	int a;
-}
-class B : public A
-{
-public:
-	int b;
-}
-void f(A& obj)
-{
-	obj.a++;
-}
-
-int main()
-{
-	A obj1;
-	B obj2;
-	
-	f(obj1); //OK!
-	f(obj2); //OK!
-}
- ```
-
-## Конструктури и деструктори при наследяване.
-Във всеки контструктор на класът-наследник, трябва да се оказва кой конструктор да се извика за базовия клас. Ако не оказано, ще се извика конструктора по подразбиране.
-
-```c++
-class B : public A
-{
-.
-.
-.
-public:
-	B(...) : A(...) //some constructor of A.
-	{
-	.
-	.
-	.
-	}
-}
- ```
-Деструкторът на наследния клас извиква деструктора на базовия клас.
-
-
-## Копиране при наследяване
-При разписване на конструктора за копиране и оператора за присовяване на клас-наследник, трябва експлицитно да извикваме копиране и за базовия клас.
- ```c++
-B::B(const B& other) : A(other) // (copy constructor of A (base class)
-{
-	copyFrom(other);
-}
-
-B& B::operator=(const B& other)
-{
-
-	if (this != &other)
-	{
-		A::operator=(other); //operator= of A (base class)
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
- ```
-
-
-
-
-## Задачи
-
-**Задача 1:**
-Реализирайте класове бар, от който ще могат да се взимат напитки (нормални и алкохолни) в определен ред. Редът ще бъде по зареждането им в бара.
-**Напитката** има *име и количество (в мл)*, а **алкохолната напитка** има *име, количество и процент алкохол.*
-
-Примерен интерфейс:
- ```c++
-
-int main()
-{
-	Bar b;
-
-	b.addDrink("Coke", 330);
-
-	b.addDrink("Fanta", 500);
-
-	b.addAlocoholDrink("Zagorka", 500, 5);
-
-	b.getAcloholDrink(); // Zagorka
-	
-	b.getDrink() // Coke
-	b.getDrink() // Fanta
-}
- ```
-
-
diff --git a/Sem. 12/task1/Bar/Bar.cpp b/Sem. 12/task1/Bar/Bar.cpp
deleted file mode 100644
index 0235801..0000000
--- a/Sem. 12/task1/Bar/Bar.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#include "Bar.h"
-
-void Bar::addDrink(const char* name, int ml)
-{
-	drinks.enqueue(Drink(name, ml));
-}
-void Bar::addAlocoholDrink(const char* name, int ml, int alcohol)
-{
-	alcoholDrinks.enqueue(AlcoholDrink(name, ml, alcohol));
-}
-
-Drink Bar::getDrink()
-{
-	Drink d = drinks.dequeue();
-	incrementStatistics(d);
-	return d;
-}
-AlcoholDrink Bar::getAcloholDrink()
-{
-	AlcoholDrink d = alcoholDrinks.dequeue();
-	incrementStatistics(d, true);
-	return d;
-}
-
-void Bar::incrementStatistics(const Drink& dr, bool isAlcoholDrink)
-{
-	stats.mlSold += dr.getMl();
-	stats.allDrinksSold++;
-
-	if (isAlcoholDrink)
-		stats.alcoholDrinksSold++;
-}
-
-size_t Bar::getMlSold() const
-{
-	return stats.mlSold;
-}
-size_t Bar::getAllDrinksSold() const
-{
-	return stats.allDrinksSold;
-}
-size_t Bar::getAlcoholDrinksSold() const
-{
-	return stats.alcoholDrinksSold;
-}
diff --git a/Sem. 12/task1/Bar/Bar.h b/Sem. 12/task1/Bar/Bar.h
deleted file mode 100644
index 06e7d92..0000000
--- a/Sem. 12/task1/Bar/Bar.h
+++ /dev/null
@@ -1,36 +0,0 @@
-#pragma once
-#include <iostream>
-#include "../Drinks/AlcoholDrink.h"
-#include "../Queue/Queue.hpp"
-
-
-
-class Bar
-{
-	struct Statistics
-	{
-		size_t mlSold = 0;
-		size_t allDrinksSold = 0;
-		size_t alcoholDrinksSold = 0;
-	};
-
-private:
-	Queue<Drink> drinks;
-	Queue<AlcoholDrink> alcoholDrinks;
-
-	Statistics stats;
-
-	void incrementStatistics(const Drink& dr, bool isAlcoholDrink = false);
-
-public:
-
-	void addDrink(const char* name, int ml);
-	void addAlocoholDrink(const char* name, int ml, int alcohol);
-
-	Drink getDrink();
-	AlcoholDrink getAcloholDrink();
-
-	size_t getMlSold() const;
-	size_t getAllDrinksSold() const;
-	size_t getAlcoholDrinksSold() const;
-};
diff --git a/Sem. 12/task1/Drinks/AlcoholDrink.cpp b/Sem. 12/task1/Drinks/AlcoholDrink.cpp
deleted file mode 100644
index 4171ff0..0000000
--- a/Sem. 12/task1/Drinks/AlcoholDrink.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#pragma warning(disable: 4996)
-#include "AlcoholDrink.h"
-
-AlcoholDrink::AlcoholDrink() : AlcoholDrink("Unknown", 0, 0){}
-
-AlcoholDrink::AlcoholDrink(const char* name, int ml, int alcoholPercentage) : Drink(name, ml)
-{
-	setAlcoholPercentage(alcoholPercentage);
-}
-int AlcoholDrink::getAlcoholPercentage() const
-{
-	return alcoholPercentage;
-}
-void AlcoholDrink::setAlcoholPercentage(int alcoholPercentage)
-{
-	const int MINPERCENTAGE = 1;
-	const int MAXPERCENTAGE = 97;
-
-	this->alcoholPercentage = MINPERCENTAGE;
-
-	if (MINPERCENTAGE <= alcoholPercentage && alcoholPercentage <= MAXPERCENTAGE)
-		this->alcoholPercentage = alcoholPercentage;
-
-}
-\ No newline at end of file
diff --git a/Sem. 12/task1/Drinks/AlcoholDrink.h b/Sem. 12/task1/Drinks/AlcoholDrink.h
deleted file mode 100644
index 89b2da3..0000000
--- a/Sem. 12/task1/Drinks/AlcoholDrink.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-#include "Drink.h"
-
-class AlcoholDrink : public Drink 
-{
-	int alcoholPercentage;
-
-public:
-	AlcoholDrink();
-	AlcoholDrink(const char* name, int ml, int alcoholPercentage);
-
-	int getAlcoholPercentage() const;
-	void setAlcoholPercentage(int alcoholPercentage);
-};
-\ No newline at end of file
diff --git a/Sem. 12/task1/Drinks/Drink.cpp b/Sem. 12/task1/Drinks/Drink.cpp
deleted file mode 100644
index 55b3e3a..0000000
--- a/Sem. 12/task1/Drinks/Drink.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#pragma warning(disable: 4996)
-#include "Drink.h"
-#include <iostream>
-
-Drink::Drink() : Drink("Unknown", 0)
-{}
-const char* Drink::getName() const
-{
-	return name;
-}
-int Drink::getMl() const
-{
-	return ml;
-}
-
-void Drink::setName(const char* name)
-{
-	delete[] this->name;
-
-	this->name = new char[strlen(name) + 1];
-	strcpy(this->name, name);
-
-}
-void Drink::setMl(int ml)
-{
-	const int MAX_ML = 1000;
-	const int MIN_ML = 100;
-
-	ml = MIN_ML;
-	if (MIN_ML <= ml && ml <= MAX_ML)
-		this->ml = ml;
-
-}
-
-Drink::Drink(const char* name, int ml) : name(nullptr)
-{
-	setName(name);
-	setMl(ml);
-}
-
-Drink::Drink(const Drink& other)
-{
-	copyFrom(other);
-}
-Drink& Drink::operator = (const Drink& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Drink::~Drink()
-{
-	free();
-}
-void Drink::copyFrom(const Drink& other)
-{
-	name = new char[strlen(other.name) + 1];
-	strcpy(name, other.name);
-
-	ml = other.ml;
-}
-void Drink::free()
-{
-	delete[] name;
-	ml = 0;
-}
-\ No newline at end of file
diff --git a/Sem. 12/task1/Drinks/Drink.h b/Sem. 12/task1/Drinks/Drink.h
deleted file mode 100644
index d4d37ae..0000000
--- a/Sem. 12/task1/Drinks/Drink.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-class Drink
-{
-public:
-	Drink();
-
-	Drink(const char* name, int ml);
-
-	Drink(const Drink& other);
-	Drink& operator=(const Drink& other);
-	~Drink();
-
-	const char* getName() const;
-	int getMl() const;
-
-	void setName(const char* name);
-	void setMl(int ml);
-
-private:
-	char* name;
-	int ml;
-
-	void copyFrom(const Drink& other);
-	void free();
-
-};
-\ No newline at end of file
diff --git a/Sem. 12/task1/Drinks/EnergyDrink.cpp b/Sem. 12/task1/Drinks/EnergyDrink.cpp
deleted file mode 100644
index ef61456..0000000
--- a/Sem. 12/task1/Drinks/EnergyDrink.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-#pragma warning(disable: 4996)
-#include "EnergyDrink.h"
-#include <iostream>
-
-EnergyDrink::EnergyDrink(const char* name, int ml, const char* sertificate) : Drink(name, ml), qualityCertificate(nullptr)
-{
-	setCertificate(sertificate);
-}
-const char* EnergyDrink::getCertifiate() const
-{
-	return qualityCertificate;
-}
-void EnergyDrink::setCertificate(const char* certficate)
-{
-	delete[] qualityCertificate;
-
-	qualityCertificate = new char[strlen(certficate) + 1];
-	strcpy(qualityCertificate, certficate);
-
-}
-EnergyDrink::EnergyDrink(const EnergyDrink& other) : Drink(other)
-{
-	copyFrom(other);
-}
-
-EnergyDrink& EnergyDrink::operator=(const EnergyDrink& other)
-{
-	if (this != &other)
-	{
-		Drink::operator=(other);
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-
-EnergyDrink::~EnergyDrink()
-{
-	free();
-}
-void EnergyDrink::copyFrom(const EnergyDrink& other)
-{
-	qualityCertificate = new char[strlen(other.qualityCertificate) + 1];
-	strcpy(qualityCertificate, other.qualityCertificate);
-}
-void EnergyDrink::free()
-{
-	delete[] qualityCertificate;
-}
-\ No newline at end of file
diff --git a/Sem. 12/task1/Drinks/EnergyDrink.h b/Sem. 12/task1/Drinks/EnergyDrink.h
deleted file mode 100644
index 99bbbdb..0000000
--- a/Sem. 12/task1/Drinks/EnergyDrink.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// име, мл, сертификат за качество.
-#pragma once
-#include "Drink.h"
-
-class EnergyDrink : public Drink
-{
-private:
-	char* qualityCertificate;
-
-	void copyFrom(const EnergyDrink& other);
-	void free();
-
-public:
-	EnergyDrink(const char* name, int ml, const char* certificate);
-	
-	EnergyDrink(const EnergyDrink& other);
-	EnergyDrink& operator=(const EnergyDrink& other);
-	~EnergyDrink();
-
-	const char* getCertifiate() const;
-	void setCertificate(const char* certificate);
-};
-\ No newline at end of file
diff --git a/Sem. 12/task1/Queue/Queue.hpp b/Sem. 12/task1/Queue/Queue.hpp
deleted file mode 100644
index e47460a..0000000
--- a/Sem. 12/task1/Queue/Queue.hpp
+++ /dev/null
@@ -1,145 +0,0 @@
-#pragma once
-#include <iostream>
-
-template <typename T>
-class Queue
-{
-	T* data;
-	size_t capacity;
-	size_t count;
-
-	size_t head; //where to get
-	size_t tail; //last added element;
-
-	void resize(size_t newCapacity);
-
-	void copyFrom(const Queue<T>& other);
-	void free();
-public:
-	Queue();
-
-	Queue(const Queue<T>& other);
-	Queue<T>& operator=(const Queue<T>& other);
-
-	void enqueue(const T& obj);
-	T dequeue();
-
-	size_t getCount();
-	size_t isEmpty();
-
-	~Queue();
-};
-
-template <typename T>
-Queue<T>::Queue()
-{
-	capacity = 4;
-	data = new T[capacity];
-
-	count = 0;
-	head = tail = 0;
-}
-
-
-
-template <typename T>
-void Queue<T>::enqueue(const T& obj)
-{
-	if (count == capacity)
-		resize(capacity * 2);
-	if (count != 0)
-		tail++;
-
-	tail %= capacity; //so we don't get an out of range exception
-
-	data[tail] = obj;
-
-	count++;
-}
-
-template <typename T>
-T Queue<T>::dequeue()
-{
-	if (count == 0)
-		throw std::exception("The collection is empty!");
-
-	T toReturn = data[head];
-	(++head) %= capacity;
-
-	count--;
-
-	return toReturn;
-}
-
-template <typename T>
-size_t Queue<T>::getCount()
-{
-	return count;
-}
-
-template <typename T>
-size_t Queue<T>::isEmpty()
-{
-	return getCount() == 0;
-}
-
-template <typename T>
-void Queue<T>::resize(size_t newCapacity)
-{
-	T* newData = new T[newCapacity];
-
-	for (int i = 0, ind = head; i < count; i++, (++ind) %= capacity)
-		newData[i] = data[ind];
-
-	delete[] data;
-	capacity = newCapacity;
-	data = newData;
-
-	head = 0;
-	tail = count - 1;
-}
-
-template <typename T>
-void Queue<T>::copyFrom(const Queue<T>& other)
-{
-	data = new T[other.capacity];
-	for (int i = 0; i < other.capacity; i++)
-		data[i] = other.data[i];
-
-	head = other.head;
-	tail = other.tail;
-
-	count = other.count;
-	capacity = other.capacity;
-
-}
-
-template <typename T>
-void Queue<T>::free()
-{
-	delete[] data;
-}
-
-template <typename T>
-Queue<T>::Queue(const Queue<T>& other)
-{
-	copyFrom(other);
-
-}
-
-template <typename T>
-Queue<T>& Queue<T>::operator=(const Queue<T>& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-
-template <typename T>
-Queue<T>::~Queue()
-{
-	free();
-}
diff --git a/Sem. 12/task1/main.cpp b/Sem. 12/task1/main.cpp
deleted file mode 100644
index ba367d8..0000000
--- a/Sem. 12/task1/main.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-#pragma warning(disable: 4996)
-
-
-#include <iostream>
-#include "Bar/Bar.h"
-#include "Drinks/EnergyDrink.h"
-
-using namespace std;
-
-int main()
-{	
-	Bar b;
-
-	b.addDrink("Coke", 330);
-
-	b.addDrink("Fanta", 500);
-
-	b.addAlocoholDrink("Zagorka", 500, 5);
-
-	cout << b.getDrink().getName()<<endl;
-	cout << b.getDrink().getName() << endl;
-
-	cout << b.getAcloholDrink().getName() << endl;
-
-	cout << b.getAllDrinksSold() << endl;
-
-	EnergyDrink energyDrink("Monster", 500, "ECAS");
-	
-	std::cout << energyDrink.getCertifiate();
-}
diff --git a/Sem. 13/Figures/Circle.cpp b/Sem. 13/Figures/Circle.cpp
deleted file mode 100644
index 8226582..0000000
--- a/Sem. 13/Figures/Circle.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "Circle.h"
-
-const double PI = 3.1415;
-Circle::Circle(int x, int y, double radius) : Shape(1), radius(radius)
-{
-	setPoint(0, x, y);
-}
-
-double Circle::getArea() const
-{
-	return PI * radius * radius;
-}
-double Circle::getPer() const
-{
-	return 2 * PI * radius;
-}
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Circle.h b/Sem. 13/Figures/Circle.h
deleted file mode 100644
index 6449fc1..0000000
--- a/Sem. 13/Figures/Circle.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-#include "Shape.h"
-
-class Circle : public Shape
-{
-	double radius;
-
-public:
-	Circle(int x, int y, double radius);
-
-	double getArea() const override;
-	double getPer() const override; 
-
-};
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Rectangle.cpp b/Sem. 13/Figures/Rectangle.cpp
deleted file mode 100644
index 3fa1026..0000000
--- a/Sem. 13/Figures/Rectangle.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "Rectangle.h"
-
-Rectangle::Rectangle(int x1, int y1, int x3, int y3) : Shape(4)
-{
-	setPoint(0, x1, y1);
-	setPoint(1, x1, y3);
-	setPoint(2, x3, y3);
-	setPoint(3, x3, y1);
-}
-double Rectangle::getArea() const
-{
-	Shape::point p0 = getPointAtIndex(0);
-	Shape::point p1 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(3);
-
-	return p0.getDist(p1) * p0.getDist(p3);
-
-}
-double Rectangle::getPer() const
-{
-	Shape::point p0 = getPointAtIndex(0);
-	Shape::point p1 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(3);
-
-	return 2*(p0.getDist(p1) + p0.getDist(p3));
-}
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Rectangle.h b/Sem. 13/Figures/Rectangle.h
deleted file mode 100644
index ccdad8e..0000000
--- a/Sem. 13/Figures/Rectangle.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#pragma once
-#include "Shape.h"
-
-class Rectangle : public Shape
-{
-public:
-	Rectangle(int x1, int y1, int x3, int y3);
-	double getArea() const override;
-	double getPer() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Shape.cpp b/Sem. 13/Figures/Shape.cpp
deleted file mode 100644
index 27bb9e9..0000000
--- a/Sem. 13/Figures/Shape.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-#include "Shape.h"
-
-Shape::Shape(size_t pointsCount) : pointsCount(pointsCount)
-{
-	points = new point[pointsCount]; // [0,0], [0,0]....
-}
-
-void Shape::copyFrom(const Shape& other)
-{
-	points = new point[other.pointsCount];
-
-	for (int i = 0; i < other.pointsCount; i++)
-		points[i] = other.points[i];
-}
-void Shape::free()
-{
-	delete[] points;
-}
-
-Shape::Shape(const Shape& other)
-{
-	copyFrom(other);
-}
-Shape& Shape::operator= (const Shape& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Shape::~Shape()
-{
-	free();
-}
-
-const Shape::point& Shape::getPointAtIndex(size_t index) const
-{
-	if (index >= pointsCount)
-		throw std::exception("Invalid point index!");
-
-	return  points[index];
-}
-
-void Shape::setPoint(size_t pointIndex, int x, int y)
-{
-	if (pointIndex >= pointsCount)
-		throw std::exception("Invalid point index!");
-
-	points[pointIndex] = point(x, y);
-}
diff --git a/Sem. 13/Figures/Shape.h b/Sem. 13/Figures/Shape.h
deleted file mode 100644
index 62f5c41..0000000
--- a/Sem. 13/Figures/Shape.h
+++ /dev/null
@@ -1,41 +0,0 @@
-#pragma once
-#include <iostream>
-
-class Shape   // Abstract class - no instances of Shape are allowed!
-{
-protected:
-	struct point
-	{
-		point() :x(0), y(0){}
-		point(int x, int y) :x(x), y(y){}
-		int x;
-		int y;
-		double getDist(const point& other) const
-		{
-			int dx = x - other.x;
-			int dy = y - other.y;
-
-			return sqrt(dx*dx + dy*dy);
-		}
-	};
-	const point& getPointAtIndex(size_t index) const;
-private:
-	point* points;
-	size_t pointsCount;
-
-	void copyFrom(const Shape& other);
-	void free();
-
-
-public:
-	Shape(size_t pointsCount);
-
-	Shape(const Shape& other);
-	Shape& operator=(const Shape& other);
-	virtual ~Shape(); //!!!!!!
-
-	void setPoint(size_t pointIndex, int x, int y);
-
-	virtual double getArea() const = 0; //pure virtual
-	virtual double getPer()  const = 0; // pure virtual
-};
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Triangle.cpp b/Sem. 13/Figures/Triangle.cpp
deleted file mode 100644
index 7de831c..0000000
--- a/Sem. 13/Figures/Triangle.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#include "Triangle.h"
-
-Triangle::Triangle(int x1, int y1, int x2, int y2, int x3, int y3) : Shape(3)
-{
-	setPoint(0, x1, y1);
-	setPoint(1, x2, y2);
-	setPoint(2, x3, y3);
-}
-double Triangle::getArea() const
-{
-	Shape::point p1 = getPointAtIndex(0);
-	Shape::point p2 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(2);
-
-	return abs(p1.x*p2.y + p2.x*p3.y + p3.x*p1.y - p1.y * p2.x - p2.y*p3.x - p3.y*p1.x) / 2.00;
-}
-double Triangle::getPer() const
-{
-	Shape::point p1 = getPointAtIndex(0);
-	Shape::point p2 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(2);
-
-	return p1.getDist(p2) + p2.getDist(p3) + p3.getDist(p1);
-}
-\ No newline at end of file
diff --git a/Sem. 13/Figures/Triangle.h b/Sem. 13/Figures/Triangle.h
deleted file mode 100644
index c157de8..0000000
--- a/Sem. 13/Figures/Triangle.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-
-#include "Shape.h"
-
-class Triangle : public Shape
-{
-
-public:
-	Triangle(int x1, int y1, int x2, int y2, int x3, int y3);
-	double  getArea() const override;
-	double getPer() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 13/Figures/main.cpp b/Sem. 13/Figures/main.cpp
deleted file mode 100644
index 7e9f9ff..0000000
--- a/Sem. 13/Figures/main.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-#include <iostream>
-using namespace std;
-
-#include "Rectangle.h"
-#include "Circle.h"
-#include "Triangle.h"
-
-
-void printAreas(const Shape* const * shapes, size_t shapesCount)
-{
-	for (int i = 0; i < shapesCount; i++)
-		cout << shapes[i]->getArea() <<endl;
-}
-void printPers(const Shape* const * shapes, size_t shapesCount)
-{
-	for (int i = 0; i < shapesCount; i++)
-		cout << shapes[i]->getPer() << endl;
-}
-int main()
-{
-		Shape** arr = new Shape*[4];
-
-		arr[0] = new Rectangle(3, 4, 6, 8);
-		arr[1] = new Circle(3, 3, 4);
-		arr[2] = new Circle(1, 4, 5);
-		arr[3] = new Triangle(1, 1, 2, 2, 3, 3);
-
-		printAreas(arr, 4);
-		printPers(arr, 4);
-
-		for (int i = 0; i < 4; i++)
-			delete arr[i];
-		delete[] arr;
-	
-
-}
-\ No newline at end of file
diff --git a/Sem. 13/README.md b/Sem. 13/README.md
deleted file mode 100644
index 7835c36..0000000
--- a/Sem. 13/README.md
+++ /dev/null
@@ -1,198 +0,0 @@
-# Статично и динамично свързване. Виртуални функции. Полиморфизъм. Абстрактни класове.
-#### Статично и динамично свързване. Виртуални функции.
-Пример за **статично** свързване:
-```c++
-#include <iostream>
-using namespace std;
-
-struct A
-{ 
-    void f() const 
-    {
-	std::cout << "A::f()" << std::endl;
-    }	
-};
-
-struct B : public A
-{
-    void f() const 
-    {
-	std::cout << "B::f()" << std::endl;
-    }	
-};
-
-int main()
-{
-	B* bPtr = new B();
-
-	A* aPtr = bPtr;
-	
-	bPtr->f(); // B::f()
-	aPtr->f(); // A::f()
-}
- ```
-
- - **Статично** свързване - изборът на функцията, която трябва да се изпълни става **по време на компилация**.
- - **Динамично** свързване – изборът на функцията, която трябва да се изпълни става **по време на изпълнение на програмата**.
-
-```c++
-#include <iostream>
-using namespace std;
-
-struct A
-{
-    virtual void f() const 
-    {
-	std::cout << "A::f()" << std::endl;
-    }	
-};
-
-struct B : public A
-{
-    void f() const 
-    {
-       std::cout << "B::f()" << std::endl;
-    }	
-};
-
-int main()
-{
-	А* ptrs[2];
-	ptrs[0] = new A();
-	ptrs[1] = new B();
-	
-	ptrs[0]->f(); // B::f()
-	ptrs[1]->f(); // B::f()
-}
- ```
-#### Полиморфизъм
-Едни и същи действия се реализират по различен начин в
-зависимост от обектите, върху които се прилагат.
-
- - Действията се наричат полиморфни.
- - Реализира се чрез виртуални функции.
- - Класовете, върху които ще се прилага, трябва да имат общ родител или прародител, т.е. да са наследници на един и същ клас.
- - В класа се дефинира виртуален метод, съответстващ на полиморфното действие.
- - Всеки клас предефинира или не виртуалния метод.
- -  Активирането става чрез указател към базов клас, на който може да се присвоят адресите на обекти на който и да е от базовите класове от йерархията
-
-**Важно!** При полиморфна йерархия ще изтриваме обектите чрез указатели от базовия клас. За да се извикват правилните деструкори задължително **деструкторът на базовият клас** трябва е деклариран като виртуален!
-```c++
-#include<iostream>
-
-struct Animal
-{
-	virtual void sayHello() const
-	{
-		std::cout << "Hello, I am a random animal" << std::endl;
-	}
-
-	virtual ~Animal(){} //!!!
-};
-struct Dog : public Animal
-{
-	void sayHello() const override
-	{
-		std::cout << "Hello, I am a dog!" << std::endl;
-	}
-};
-
-struct Cat : public Animal
-{
-	void sayHello() const override
-	{
-		std::cout << "Hello, I am a cat!" << std::endl;
-	}
-};
-
-struct Mouse : public Animal
-{
-};
-
-int main()
-{
-	Animal** animals = new Animal*[3];
-
-	animals[0] = new Dog();
-	animals[1] = new Cat();
-	animals[2] = new Mouse();
-
-
-	//from base-class pointer
-	animals[0]->sayHello(); // Hello, I am a dog!
-	animals[1]->sayHello(); // Hello, I am a cat!
-	animals[2]->sayHello(); // Hello, I am a random animal!
-
-	delete animals[0], animals[1], animals[2];
-	delete[] animals;
-}
-
- ```
- #### Абстрактен клас
- 
-
- - Чисто виртуална функция (**pure virtual function**) - вруална функция без тяло.
- - Клас е **абстрактен**, ако в него има поне една **чисто виртуална функция**.
-
-Тогава класът е предназначен единствено за наследяване и няма да може да създаваме обекти от него.
-Така във всеки наследник ще трябва да се разпише имплементация на функцията. Ако някой наследник няма собствена имплементация, то и той става абстрактен клас.
-
-```c++
-#include<iostream>
-
-struct Animal
-{
-	virtual void sayHello() const = 0;
-
-
-	virtual ~Animal(){} //!!!
-};
-struct Dog : public Animal
-{
-	void sayHello() const override
-	{
-		std::cout << "Hello, I am a dog!" << std::endl;
-	}
-};
-
-struct Cat : public Animal
-{
-	void sayHello() const override
-	{
-		std::cout << "Hello, I am a cat!" << std::endl;
-	}
-};
-
-struct Mouse : public Animal
-{
-	void sayHello() const override
-	{
-		std::cout << "Hello, I am a mouse!" << std::endl;
-	}
-};
-
-struct PrehistoricAnimal : public Animal
-{};
-
-int main()
-{
-	// Animal* pa1 = new Animal(); No! Animal is an abstract class!
-	// Animal* pa2 = new PrehistoricAnimal(); No! PrehistoricAnimal is also an abstract class!
-
-	Animal** animals = new Animal*[3];
-
-	animals[0] = new Dog();
-	animals[1] = new Cat();
-	animals[2] = new Mouse();
-
-
-	//from base-class pointer
-	animals[0]->sayHello(); // Hello, I am a dog!
-	animals[1]->sayHello(); // Hello, I am a cat!
-	animals[2]->sayHello(); // Hello, I am a random animal!
-
-	delete animals[0], animals[1], animals[2];
-	delete[] animals;
-}
-
- ```
diff --git a/Sem. 14/Collection/ShapesCollection.cpp b/Sem. 14/Collection/ShapesCollection.cpp
deleted file mode 100644
index 5bd2711..0000000
--- a/Sem. 14/Collection/ShapesCollection.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-#include "ShapesCollection.h"
-
-void ShapesCollection::addCircle(double x, double y, double radius)
-{
-	Circle* ptr = new Circle(x, y, radius);
-	collection.push_back(ptr);
-}
-void ShapesCollection::addRectangle(double x1, double y1, double x3, double y3)
-{
-	Rectangle* ptr = new Rectangle(x1, y1, x3, y3);
-	collection.push_back(ptr);
-}
-void ShapesCollection::addTriangle(double x1, double y1, double x2, double y2, double x3, double y3)
-{
-	Triangle* ptr = new Triangle(x1, y1, x2, y2, x3, y3);
-	collection.push_back(ptr);
-}
-void ShapesCollection::addRhombus(double x1, double y1, double x2, double y2)
-{
-	collection.push_back(new Rhombus(x1, y1, x2, y2));
-}
-
-void ShapesCollection::addSquare(double x1, double y1, double sideLength)
-{
-	collection.push_back(new Square(x1, y1, sideLength));
-}
-
-void ShapesCollection::printAreas() const
-{
-	for (int i = 0; i < collection.size(); i++)
-		std::cout << collection[i]->getArea() << " " << std::endl;
-}
-void ShapesCollection::printPers() const
-{
-	for (int i = 0; i < collection.size(); i++)
-		std::cout << collection[i]->getPer() << " " << std::endl;
-}
-
-void ShapesCollection::copyFrom(const ShapesCollection& other)
-{
-	for (int i = 0; i < other.collection.size(); i++)
-		collection.push_back(other.collection[i]->clone());
-}
-void ShapesCollection::free()
-{
-	for (int i = 0; i < collection.size(); i++)
-		delete collection[i];
-	collection.clear();
-}
-
-ShapesCollection::ShapesCollection(const ShapesCollection& other)
-{
-	copyFrom(other);
-}
-ShapesCollection& ShapesCollection::operator= (const ShapesCollection& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-ShapesCollection::~ShapesCollection()
-{
-	free();
-}
diff --git a/Sem. 14/Collection/ShapesCollection.h b/Sem. 14/Collection/ShapesCollection.h
deleted file mode 100644
index 92c7deb..0000000
--- a/Sem. 14/Collection/ShapesCollection.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#include "../Shapes/Circle.h"
-#include "../Shapes/Rectangle.h"
-#include "../Shapes/Triangle.h"
-#include "../Shapes/Rhombus.h"
-#include "../Shapes/Square.h"
-#include <vector>
-
-class ShapesCollection
-{
-	std::vector<Shape*> collection;
-
-	void free();
-	void copyFrom(const ShapesCollection& other);
-
-public:
-
-
-	//factory
-	void addCircle(double x, double y, double radius);
-	void addRectangle(double x1, double y1, double x3, double y3);
-	void addTriangle(double x1, double y1, double x2, double y2, double x3, double y3);
-	void addRhombus(double x1, double y1, double x2, double y2);
-	void addSquare(double x1, double y2, double sideLength);
-	//
-	
-	
-	void printAreas() const;
-	void printPers() const;
-	
-	ShapesCollection() = default;
-	ShapesCollection(const ShapesCollection& other);
-	ShapesCollection& operator=(const ShapesCollection& other);
-
-	~ShapesCollection();
-};
diff --git a/Sem. 14/README.md b/Sem. 14/README.md
deleted file mode 100644
index acf6382..0000000
--- a/Sem. 14/README.md
+++ /dev/null
@@ -1,157 +0,0 @@
-
-# Колекции от обекти в полиморфна йерархия. Копиране и триене.
-## Колекция.
-
-Можем да реализираме колекция от различни типове (но с общ базов клас), чрез масив от указатели. Указателите трябва да са от типа на базовия клас.
-
-```c++
-struct Fruit
-{
-	virtual void printColor() const = 0;
-	
-	virtual ~Fruit(){}
-};
-
-struct Apple
-{
-	 void printColor() const override
-	{
-		std::cout << "Red or green! "<<std::endl;
-	}
-};
-
-struct Orange
-{
-	void printColor() const override
-	{
-		std::cout << "Orange! "<<std::endl;
-	}
-	
-};
-
-struct Lemon
-{
-	Lemon(size_t sourness) : sourness(sourness){}
-	
-	size_t sourness;
-	void printColor() const override
-	{
-		std::cout << "Yellow! "<<std::endl;
-	}
-};
-
-class FruitStore
-{
-private:
-	Fruit** fruits;
-	size_t capacity;
-	size_t count;
-          
-    void copyFrom(const FruitStore& other);
-    void free();
-    
-public:
-	FruitStore();
-	FruitStore(const FruitStore&);
-	FruitStore& operator=(const FruitStore&);
-       ~FruitStore();
-	
-	void addApple();
-    	void addOrange();
-     	void addLemon(size_t sourness);
-};
-
-void FruitStore::addApple()
-{
-	fruits[count++] = new Apple();
-}
-
-void FruitStore::addOrange()
-{
-	fruits[count++] = new Orange();
-}
-void FruitStore::addLemon(size_t sourness)
-{
-	fruits[count++] = new Lemon(sourness);
-}
- ```
-
-## Триене
-Понеже имаме виртуален деструктор в базовия клас, не се интересуваме в колекцията какви са обектите, които трием.
-```c++
-void FruitStore::free()
-{
-	for(int i = 0; i < count; i++)
-		delete fruits[i];
-	delete[] fruits;
-}
- ```
-
-## Копиране
-Искаме да реализираме копиране на колекцията.
-Това трябва да стане без да нарушаваме абстракцията - искаме обеките да се копират без да се налага да запитваме за техния тип.
-За това дефинираме виртуална функция clone, която ще връща копие на обекта. Тази функция я разписваме във всеки от наследниците.
-
-```c++
-
-struct Fruit
-{
-	virtual void printColor() const = 0;
-	virtual ~Fruit(){}
-
-      	virtual Fruit* clone() const = 0; //!
-};
-
-struct Apple
-{
-	 void printColor() const override
-	{
-		std::cout << "Red or green! "<<std::endl;
-	}
-	Fruit* clone() const override
-	{
-		return new Apple(*this);
-    	}
-	
-};
-
-struct Orange
-{
-	void printColor() const override
-	{
-		std::cout << "Orange! "<<std::endl;
-	}
-	
-	Fruit* clone() const override
-	{
-		return new Apple(*this);
-	}
-};
-
-struct Lemon
-{
-	Lemon(size_t sourness) : sourness(sourness){}
-	
-	size_t sourness;
-	void printColor() const override
-	{
-		std::cout << "Yellow! "<<std::endl;
-	}
-	Fruit* clone() const override
-	{
-		return new Lemon(*this);
-    	}
-};
- ```
-От тук копирането става тривиално:
-```c++
-void FruitStore::copyFrom(const FruitStore& other)
-{
-	fruits = new Fruit*[other. capacity];
-	for(int i = 0; i < other.count; i++)
-		fruits[i] = other.fruits[u]->clone();
-	count = other.count;
-	capacity = other.capacity;
-}
- ```
-
diff --git a/Sem. 14/Shapes/Circle.cpp b/Sem. 14/Shapes/Circle.cpp
deleted file mode 100644
index 3f4ac98..0000000
--- a/Sem. 14/Shapes/Circle.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include "Circle.h"
-
-const double PI = 3.1415;
-Circle::Circle(double x, double y, double radius) : Shape(1), radius(radius)
-{
-	setPoint(0, x, y);
-}
-
-double Circle::getArea() const
-{
-	return PI * radius * radius;
-}
-double Circle::getPer() const
-{
-	return 2 * PI * radius;
-}
-
-Shape* Circle::clone() const
-{
-	Circle* copy = new Circle(*this);
-	return copy;
-}
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Circle.h b/Sem. 14/Shapes/Circle.h
deleted file mode 100644
index 84380fa..0000000
--- a/Sem. 14/Shapes/Circle.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-#include "Shape.h"
-
-class Circle : public Shape
-{
-	double radius;
-
-public:
-	Circle(double x, double y, double radius);
-
-	double getArea() const override;
-	double getPer() const override; 
-
-	Shape* clone() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Rectangle.cpp b/Sem. 14/Shapes/Rectangle.cpp
deleted file mode 100644
index 9e16b01..0000000
--- a/Sem. 14/Shapes/Rectangle.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#include "Rectangle.h"
-
-Rectangle::Rectangle(double x1, double y1, double x3, double y3) : Shape(4)
-{
-	setPoint(0, x1, y1);
-	setPoint(1, x1, y3);
-	setPoint(2, x3, y3);
-	setPoint(3, x3, y1);
-}
-double Rectangle::getArea() const
-{
-	Shape::point p0 = getPointAtIndex(0);
-	Shape::point p1 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(3);
-
-	return p0.getDist(p1) * p0.getDist(p3);
-
-}
-double Rectangle::getPer() const
-{
-	Shape::point p0 = getPointAtIndex(0);
-	Shape::point p1 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(3);
-
-	return 2*(p0.getDist(p1) + p0.getDist(p3));
-}
-
-Shape* Rectangle::clone() const
-{
-	Rectangle* copy = new Rectangle(*this);
-	return copy;
-}
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Rectangle.h b/Sem. 14/Shapes/Rectangle.h
deleted file mode 100644
index baa4cb5..0000000
--- a/Sem. 14/Shapes/Rectangle.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#pragma once
-#include "Shape.h"
-
-class Rectangle : virtual public Shape
-{
-
-public:
-	Rectangle(double x1, double y1, double x3, double y3);
-	double getArea() const override;
-	double getPer() const override;
-
-	Shape* clone() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Rhombus.cpp b/Sem. 14/Shapes/Rhombus.cpp
deleted file mode 100644
index 62a3e8c..0000000
--- a/Sem. 14/Shapes/Rhombus.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-#include "Rhombus.h"
-
-Rhombus::Rhombus(double x1, double y1, double x2, double y2) : Shape(4)
-{
-	setPoint(0, x1, y1);
-	setPoint(1, x2, y2);
-	double sideLength = getPointAtIndex(0).getDist(getPointAtIndex(1));
-
-	setPoint(2, x2 + sideLength, y2);
-	setPoint(3, x1 + sideLength, y1);
-}
-
-double Rhombus::getArea() const
-{
-	return 0.5 *  getPointAtIndex(0).getDist(getPointAtIndex(2)) * getPointAtIndex(1).getDist(getPointAtIndex(3));
-}
-double Rhombus::getPer() const
-{
-	return 4 * getPointAtIndex(0).getDist(getPointAtIndex(1));
-}
-Shape* Rhombus::clone() const
-{
-	Rhombus* copy = new Rhombus(*this);
-	return copy;
-}
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Rhombus.h b/Sem. 14/Shapes/Rhombus.h
deleted file mode 100644
index 24e5a5b..0000000
--- a/Sem. 14/Shapes/Rhombus.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "Shape.h"
-
-class Rhombus : virtual public Shape
-{
-public:
-	Rhombus(double x1, double y1, double x2, double y2);
-
-	double  getArea() const override;
-	double getPer() const override;
-	Shape* clone() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Shape.cpp b/Sem. 14/Shapes/Shape.cpp
deleted file mode 100644
index 7bc24ef..0000000
--- a/Sem. 14/Shapes/Shape.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-#include "Shape.h"
-
-Shape::Shape(size_t pointsCount) : pointsCount(pointsCount)
-{
-	points = new point[pointsCount]; // [0,0], [0,0]....
-}
-
-void Shape::copyFrom(const Shape& other)
-{
-	points = new point[other.pointsCount];
-
-	for (int i = 0; i < other.pointsCount; i++)
-		points[i] = other.points[i];
-}
-void Shape::free()
-{
-	delete[] points;
-}
-
-Shape::Shape(const Shape& other)
-{
-	copyFrom(other);
-}
-Shape& Shape::operator= (const Shape& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-Shape::~Shape()
-{
-	free();
-}
-
-const Shape::point& Shape::getPointAtIndex(size_t index) const
-{
-	if (index >= pointsCount)
-		throw std::exception("Invalid point index!");
-
-	return  points[index];
-}
-
-void Shape::setPoint(size_t pointIndex, double x, double y)
-{
-	if (pointIndex >= pointsCount)
-		throw std::exception("Invalid point index!");
-
-	points[pointIndex] = point(x, y);
-}
diff --git a/Sem. 14/Shapes/Shape.h b/Sem. 14/Shapes/Shape.h
deleted file mode 100644
index caf7919..0000000
--- a/Sem. 14/Shapes/Shape.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#pragma once
-#include <iostream>
-
-class Shape   // Abstract class - no instances of Shape are allowed!
-{
-protected:
-	struct point
-	{
-		point() :x(0), y(0){}
-		point(double x, double y) :x(x), y(y){}
-		double x;
-		double y;
-		double getDist(const point& other) const
-		{
-			int dx = x - other.x;
-			int dy = y - other.y;
-
-			return sqrt(dx*dx + dy*dy);
-		}
-	};
-	const point& getPointAtIndex(size_t index) const;
-private:
-	point* points;
-	size_t pointsCount;
-
-	void copyFrom(const Shape& other);
-	void free();
-
-
-public:
-	Shape(size_t pointsCount);
-
-	Shape(const Shape& other);
-	Shape& operator=(const Shape& other);
-	virtual ~Shape(); //!!!!!!
-
-	void setPoint(size_t pointIndex, double x, double y);
-
-	virtual double getArea() const = 0; //pure virtual
-	virtual double getPer()  const = 0; // pure virtual
-
-	virtual Shape* clone() const = 0; //
-};
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Square.cpp b/Sem. 14/Shapes/Square.cpp
deleted file mode 100644
index 555c340..0000000
--- a/Sem. 14/Shapes/Square.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "Square.h"
-
-Square::Square(double x, double y, double sideLength) : Rectangle(x, y, x + sideLength, y - sideLength), Rhombus(x, y, x, y - sideLength), Shape(4)
-{}
-
-double Square::getArea() const
-{
-	return Rhombus::getArea();
-}
-double Square::getPer() const
-{
-	return Rectangle::getPer();
-};
-
-Shape* Square::clone() const
-{
-	Square* copy = new Square(*this);
-	return copy;
-}
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Square.h b/Sem. 14/Shapes/Square.h
deleted file mode 100644
index fd78bd8..0000000
--- a/Sem. 14/Shapes/Square.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "Rhombus.h"
-#include "Rectangle.h"
-
-class Square : public Rhombus, public Rectangle
-{
-public:
-	Square(double x, double y, double sideLength);
-
-	double getArea() const override;
-	double getPer() const override;
-
-	Shape* clone() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Triangle.cpp b/Sem. 14/Shapes/Triangle.cpp
deleted file mode 100644
index e13d685..0000000
--- a/Sem. 14/Shapes/Triangle.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-#include "Triangle.h"
-
-Triangle::Triangle(double x1, double y1, double x2, double y2, double x3, double y3) : Shape(3)
-{
-	setPoint(0, x1, y1);
-	setPoint(1, x2, y2);
-	setPoint(2, x3, y3);
-}
-double Triangle::getArea() const
-{
-	Shape::point p1 = getPointAtIndex(0);
-	Shape::point p2 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(2);
-
-	return abs(p1.x*p2.y + p2.x*p3.y + p3.x*p1.y - p1.y * p2.x - p2.y*p3.x - p3.y*p1.x) / 2.00;
-}
-double Triangle::getPer() const
-{
-	Shape::point p1 = getPointAtIndex(0);
-	Shape::point p2 = getPointAtIndex(1);
-	Shape::point p3 = getPointAtIndex(2);
-
-	return p1.getDist(p2) + p2.getDist(p3) + p3.getDist(p1);
-}
-
-Shape* Triangle::clone() const
-{
-	Triangle* copy = new Triangle(*this);
-	return copy;
-}
-\ No newline at end of file
diff --git a/Sem. 14/Shapes/Triangle.h b/Sem. 14/Shapes/Triangle.h
deleted file mode 100644
index 3a53901..0000000
--- a/Sem. 14/Shapes/Triangle.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-
-#include "Shape.h"
-
-class Triangle : public Shape
-{
-
-public:
-	Triangle(double x1, double y1, double x2, double y2, double x3, double y3);
-	double  getArea() const override;
-	double getPer() const override;
-
-	Shape* clone() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 14/main.cpp b/Sem. 14/main.cpp
deleted file mode 100644
index 5d9401c..0000000
--- a/Sem. 14/main.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <iostream>
-#include "Collection/ShapesCollection.h"
-using namespace std;
-
-int main()
-{
-	ShapesCollection s;
-
-	s.addCircle(3, 4, 5);
-	s.addTriangle(2, 3, 54, 3, 2, 1);
-	s.addRectangle(1, 2, 3, 4);
-	s.addRhombus(3, 2, 0, 0);
-	s.addSquare(4, 4, 10);
-
-	s.printAreas();
-}
diff --git a/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.cpp b/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.cpp
deleted file mode 100644
index ed9823d..0000000
--- a/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "ChessBoard.h"
-#include "../FigureFactory/FigureFactory.h"
-
-ChessBoard::ChessBoard()
-{
-	
-	for (int i = 0; i < BOARD_SIZE; i++)
-	{
-		board[1][i].f = FigureFactory::createFigure(false, PawnFigure);
-		board[6][i].f = FigureFactory::createFigure(true, PawnFigure);
-	}
-
-	board[0][0].f = FigureFactory::createFigure(false, RookFigure);
-	board[0][7].f = FigureFactory::createFigure(false, RookFigure);
-
-	board[7][0].f = FigureFactory::createFigure(true, RookFigure);
-	board[7][7].f = FigureFactory::createFigure(true, RookFigure);
-
-	
-	board[0][1].f = FigureFactory::createFigure(false, KnightFigure);
-	board[0][6].f = FigureFactory::createFigure(false, KnightFigure);
-	board[7][1].f = FigureFactory::createFigure(true, KnightFigure);;
-	board[7][6].f = FigureFactory::createFigure(true, KnightFigure);
-
-	board[0][2].f = FigureFactory::createFigure(false, BishopFigure);
-	board[0][5].f = FigureFactory::createFigure(false, BishopFigure);;
-	board[7][2].f = FigureFactory::createFigure(true, BishopFigure);
-	board[7][5].f = FigureFactory::createFigure(true, BishopFigure);
-
-	board[0][3].f = FigureFactory::createFigure(false, KingFigure);
-	board[0][4].f = FigureFactory::createFigure(false, QueenFigure);
-	board[7][4].f = FigureFactory::createFigure(true, QueenFigure);
-	board[7][3].f = FigureFactory::createFigure(true, KingFigure);
-}
-
-void ChessBoard::print() const
-{
-	std::cout << "--------" << std::endl;
-	for (int i = 0; i < BOARD_SIZE; i++)
-	{
-		for (int j = 0; j < BOARD_SIZE; j++)
-		{
-			board[i][j].print();
-		}
-		std::cout << std::endl;
-	}
-	std::cout << "--------" << std::endl << std::endl << std::endl;
-}
-
-void ChessBoard::moveFigure(size_t x, size_t y, size_t destX, size_t destY)
-{
-	
-	Figure* current = board[x][y].f;
-
-	if (current->getType() == PawnFigure)
-	{
-		//Some other logic.....  El'passant and other
-	}
-	else
-	{
-		if (board[x][y].f && board[x][y].f->canBeMoved(x, y, destX, destY))
-		{
-			delete board[destX][destY].f;
-			board[destX][destY].f = board[x][y].f;
-			board[x][y].f = nullptr;
-		}
-	}
-
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.h b/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.h
deleted file mode 100644
index 315e492..0000000
--- a/Sem. 15/Chess_basic_prototype/ChessBoard/ChessBoard.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#pragma once
-#include "../Figures/FigureBase/Figure.h"
-
-const size_t BOARD_SIZE = 8;
-class ChessBoard
-{
-	struct Cell
-	{
-		Figure* f = nullptr;
-		Cell() = default;
-
-		Cell(const Cell& other) = delete;
-		Cell& operator=(const Cell& other) = delete;
-		bool isEmpty()
-		{
-			return f == nullptr;
-		}
-
-		void print() const
-		{
-			if (f != nullptr)
-				f->print();
-			else
-				std::cout << ' ';
-		}
-
-		~Cell()
-		{
-			delete f;
-		}
-	};
-	Cell board[BOARD_SIZE][BOARD_SIZE];
-
-public:
-	ChessBoard();
-	ChessBoard(const ChessBoard& other) = delete;
-	ChessBoard& operator=(const ChessBoard&) = delete;
-
-	void print() const;
-
-	void moveFigure(size_t x, size_t y, size_t destX, size_t destY);
-	
-};
diff --git a/Sem. 15/Chess_basic_prototype/ConfigEnums/ConfigEnums.h b/Sem. 15/Chess_basic_prototype/ConfigEnums/ConfigEnums.h
deleted file mode 100644
index c3448e8..0000000
--- a/Sem. 15/Chess_basic_prototype/ConfigEnums/ConfigEnums.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-
-enum FigureType
-{
-	KingFigure,
-	QueenFigure,
-	KnightFigure,
-	BishopFigure,
-	PawnFigure,
-	RookFigure
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.cpp b/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.cpp
deleted file mode 100644
index e9db605..0000000
--- a/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.cpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#include "FigureFactory.h"
-#include "../Figures/Bishop/Bishop.h"
-#include "../Figures/King/King.h"
-#include "../Figures/Knight/Knight.h"
-#include "../Figures/Rook/Rook.h"
-#include "../Figures/Queen/Queen.h"
-#include "../Figures/Pawn/Pawn.h"
-
-Figure* FigureFactory::createFigure(bool isWhite, FigureType type)
-{
-
-	switch (type)
-	{
-	case KingFigure:
-		return new King(isWhite);
-	case QueenFigure:
-		return new Queen(isWhite);
-	case KnightFigure:
-		return new Knight(isWhite);
-	case BishopFigure:
-		return new Bishop(isWhite);
-	case PawnFigure:
-		return new  Pawn(isWhite);
-	case RookFigure:
-		return new Rook(isWhite);
-	}
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.h b/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.h
deleted file mode 100644
index 012a60c..0000000
--- a/Sem. 15/Chess_basic_prototype/FigureFactory/FigureFactory.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "../Figures/FigureBase/Figure.h"
-#include "../ConfigEnums/ConfigEnums.h"
-
-class FigureFactory
-{
-public:
-	static Figure* createFigure(bool isWhite, FigureType); //enum
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.cpp b/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.cpp
deleted file mode 100644
index 786c9eb..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "Bishop.h"
-#include <cmath>
-
-Bishop::Bishop(bool isWhite) : Figure(isWhite, RookFigure)
-{}
-bool Bishop::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	return abs((int)currentX - (int)destX) == abs((int)currentY - (int)destY);
-}
-void Bishop::print() const
-{
-	if (getIsWhite())
-		std::cout << 'B';
-	else
-		std::cout << 'b';
-}
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.h b/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.h
deleted file mode 100644
index 86949a7..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Bishop/Bishop.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#pragma once
-#include "../FigureBase/Figure.h"
-
-class Bishop : virtual public Figure
-{
-
-public:
-	Bishop(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const override;
-
-	void print() const override;
-
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.cpp b/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.cpp
deleted file mode 100644
index e69de29..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.cpp
+++ /dev/null
diff --git a/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.h b/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.h
deleted file mode 100644
index 9e2300a..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/FigureBase/Figure.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#pragma once
-#include <iostream>
-#include "../../ConfigEnums/ConfigEnums.h"
-
-class Figure
-{
-	bool isWhite;
-	FigureType type;
-
-public:
-	Figure(bool isWhite, FigureType type) :isWhite(isWhite), type(type)
-	{}
-
-	virtual bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const = 0;
-	virtual void print() const = 0;
-
-	bool getIsWhite() const { return isWhite; };
-	FigureType getType() const { return type; }
-
-	virtual ~Figure(){};
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/King/King.cpp b/Sem. 15/Chess_basic_prototype/Figures/King/King.cpp
deleted file mode 100644
index 8ca67e8..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/King/King.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "King.h"
-#include <cmath>
-
-King::King(bool isWhite) : Figure(isWhite, KingFigure)
-{}
-bool King::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	return abs((int)currentX - (int)destX) <= 1 && abs((int)currentY - (int)destY) <= 1;
-}
-void King::print() const
-{
-	if (getIsWhite())
-		std::cout << '%';
-	else
-		std::cout << '$';
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/King/King.h b/Sem. 15/Chess_basic_prototype/Figures/King/King.h
deleted file mode 100644
index 85a8e02..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/King/King.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-#include "../FigureBase/Figure.h"
-
-class King : public Figure
-{
-
-public:
-	King(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const override;
-	void print() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.cpp b/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.cpp
deleted file mode 100644
index 5713d7c..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "Knight.h"
-#include <cmath>
-
-Knight::Knight(bool isWhite) : Figure(isWhite, KnightFigure)
-{}
-bool Knight::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	int xMovеment[] = { 1, 1, -1, -1, 2, -2, 2, -2 };
-	int yMovеment[] = { 2, -2, 2, -2, 1, 1, -1, -1 };
-
-	for (int i = 0; i < 8; i++)
-	{
-		if (currentX + xMovеment[i] == destX &&
-			currentY + yMovеment[i] == destY)
-			return true;
-	}
-	return false;
-}
-
-void Knight::print() const
-{
-	if (getIsWhite())
-		std::cout << 'K';
-	else
-		std::cout << 'k';
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.h b/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.h
deleted file mode 100644
index 72acfea..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Knight/Knight.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-#include "../FigureBase/Figure.h"
-
-class Knight : public Figure
-{
-
-public:
-	Knight(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const override;
-	void print() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.cpp b/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.cpp
deleted file mode 100644
index 347032b..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.cpp
+++ /dev/null
@@ -1,20 +0,0 @@
-#include "Pawn.h"
-#include <cmath>
-Pawn::Pawn(bool isWhite) : Figure(isWhite, PawnFigure), isFirstMove(true)
-{}
-
-bool Pawn::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	if (getIsWhite())
-		return currentY - 1 == destY && abs((int)currentX - (int)destX) <= 1;
-	else
-		return currentY + 1 == destY && abs((int)currentX - (int)destX) <= 1;
-}
-
-void Pawn::print() const
-{
-	if (getIsWhite())
-		std::cout << 'P';
-	else
-		std::cout << 'p';
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.h b/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.h
deleted file mode 100644
index 675bf0b..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Pawn/Pawn.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-#include "../FigureBase/Figure.h"
-
-class Pawn : virtual public Figure
-{
-	bool isFirstMove;
-public:
-	Pawn(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const override;
-	void print() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.cpp b/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.cpp
deleted file mode 100644
index 0e33198..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "Queen.h"
-
-Queen::Queen(bool isWhite) : Bishop(isWhite), Rook(isWhite), Figure(isWhite, QueenFigure)
-{}
-
-bool Queen::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	return Bishop::canBeMoved(currentX, currentY, destX, destY)
-		|| Rook::canBeMoved(currentX, currentY, destX, destY);
-}
-
-void Queen::print() const
-{
-	if (getIsWhite())
-		std::cout << 'Q';
-	else
-		std::cout << 'q';
-}
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.h b/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.h
deleted file mode 100644
index c4fb1da..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Queen/Queen.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-#include "../Bishop/Bishop.h"
-#include "../Rook/Rook.h"
-
-class Queen : public Bishop, public Rook 
-{
-public:
-	Queen(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const;
-	void print() const;
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.cpp b/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.cpp
deleted file mode 100644
index 2cb96a3..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "Rook.h"
-
-Rook::Rook(bool isWhite) : Figure(isWhite, RookFigure)
-{}
-bool Rook::canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const
-{
-	return currentX == destX || currentY == destY;
-}
-void Rook::print() const
-{
-	if (getIsWhite())
-		std::cout << 'R';
-	else
-		std::cout << 'r';
-}
diff --git a/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.h b/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.h
deleted file mode 100644
index f6190a8..0000000
--- a/Sem. 15/Chess_basic_prototype/Figures/Rook/Rook.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-#include "../FigureBase/Figure.h"
-
-class Rook : virtual public Figure
-{
-	
-public:
-	Rook(bool isWhite);
-	bool canBeMoved(size_t currentX, size_t currentY, size_t destX, size_t destY) const override;
-	void print() const override;
-};
-\ No newline at end of file
diff --git a/Sem. 15/Chess_basic_prototype/main.cpp b/Sem. 15/Chess_basic_prototype/main.cpp
deleted file mode 100644
index 6673ec8..0000000
--- a/Sem. 15/Chess_basic_prototype/main.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <iostream>
-#include "ChessBoard/ChessBoard.h"
-using namespace std;
-
-//ШАХ
-
-int main()
-{
-	ChessBoard c;
-
-	c.print();
-
-	c.moveFigure(0, 1, 2, 0);
-
-	c.print();
-}
-\ No newline at end of file
diff --git a/Sem. 15/README.md b/Sem. 15/README.md
deleted file mode 100644
index 8a445d4..0000000
--- a/Sem. 15/README.md
+++ /dev/null
@@ -1 +0,0 @@
-TBD
diff --git a/Sem. 16/LogicExpressions/LogicExpressions/LogicExpr.h b/Sem. 16/LogicExpressions/LogicExpressions/LogicExpr.h
deleted file mode 100644
index 9188541..0000000
--- a/Sem. 16/LogicExpressions/LogicExpressions/LogicExpr.h
+++ /dev/null
@@ -1,150 +0,0 @@
-#include <iostream>
-#include <algorithm>
-#include <string>
-#include <vector>
-
-using namespace std;
-
-namespace LogicExpressions
-{
-
-	const int ENGLISH_ALPHABET_SIZE = 26;
-	struct BooleanInterpretation
-	{
-		bool values[ENGLISH_ALPHABET_SIZE];
-		BooleanInterpretation()
-		{
-			for (int i = 0; i < ENGLISH_ALPHABET_SIZE; i++)
-				values[i] = false;
-		}
-		void setVarValue(char v, bool value)
-		{
-			values[v - 'a'] = value;
-		}
-
-		bool getVarValue(char v) const
-		{
-			return values[v - 'a'];
-		}
-	};
-
-	struct LogicExpr
-	{
-		virtual void print() const = 0;
-		LogicExpr() = default;
-		LogicExpr(const LogicExpr&) = delete;
-		LogicExpr& operator=(const LogicExpr& other) = delete;
-
-		virtual bool evaluate(const BooleanInterpretation& interpret) const = 0;
-		virtual ~LogicExpr(){};
-	};
-	struct Var : public LogicExpr
-	{
-		char v;
-		Var(char v) :v(v){}
-
-		void print() const
-		{
-			cout << v;
-		}
-
-		bool evaluate(const BooleanInterpretation& interpret) const
-		{
-			return interpret.getVarValue(v);
-		}
-	};
-	struct Operation : public LogicExpr
-	{
-		LogicExpr* left;
-		char op;
-		LogicExpr* right;
-
-		Operation(LogicExpr* lhs, char op, LogicExpr* rhs) : left(lhs), op(op), right(rhs){}
-
-		void print() const
-		{
-			cout << "(";
-			left->print();
-			cout << op;
-			right->print();
-			cout << ")";
-		}
-		~Operation()
-		{
-			delete left;
-			delete right;
-		}
-
-		bool evaluate(const BooleanInterpretation& interpret) const
-		{
-			bool res1 = left->evaluate(interpret);
-			bool res2 = right->evaluate(interpret);
-
-			switch (op)
-			{
-			case '^':return res1 && res2;
-			case '|':return res1 || res2;
-			case '>':return !res1 || res2;
-			case '+': return res1 ^ res2;
-			case '-': return (res1 && res2) || (!res1 && !res2);
-			}
-
-		}
-	};
-	struct Negation : public LogicExpr
-	{
-		LogicExpr* current;
-		Negation(LogicExpr* current) :current(current){}
-
-		void print() const
-		{
-			cout << "!(";
-			current->print();
-			cout << ")";
-		}
-		~Negation()
-		{
-			delete current;
-		}
-
-		bool evaluate(const BooleanInterpretation& interpret) const
-		{
-			bool result = current->evaluate(interpret);
-			return !result;
-		}
-	};
-
-	BooleanInterpretation convertNumberToInterpretation(size_t n, const std::vector<char>& vars)
-	{
-		BooleanInterpretation current;
-		for (int i = vars.size() - 1; i >= 0; i--, n/=2)
-			current.setVarValue(vars[i], n % 2);
-
-		return std::move(current);
-	}
-
-	bool CheckValues(const LogicExpr* expr, const std::vector<char>& vars, bool value)
-	{
-		size_t checksCounts = 1 << vars.size();
-
-		for (int i = 0; i < checksCounts; i++)
-		{
-			BooleanInterpretation currentInterpret = convertNumberToInterpretation(i, vars);
-		
-			if (expr->evaluate(currentInterpret) != value)
-				return false;
-		}
-		return true;
-	}
-
-	bool isTautology(const LogicExpr* expr, const std::vector<char>& vars)
-	{
-		return CheckValues(expr, vars, true);
-	}
-
-	bool isContradiction(const LogicExpr* expr, const std::vector<char>& vars)
-	{
-		return CheckValues(expr, vars, false);
-	}
-}
-
diff --git a/Sem. 16/LogicExpressions/Source.cpp b/Sem. 16/LogicExpressions/Source.cpp
deleted file mode 100644
index af86b62..0000000
--- a/Sem. 16/LogicExpressions/Source.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "LogicExpressions/LogicExpr.h"
-
-using namespace LogicExpressions;
-
-// or |, and ^, negation !, implies >, iff -
-int main()
-{
-	LogicExpr* expr = new Operation(new Var('p'), '|', new Negation(new Var('p'))); // p | !p
-	expr->print();
-	cout << " " << isTautology(expr, { 'p' }) << endl;
-
-	LogicExpr* expr2 = new Operation(new Var('q'),'^',new Operation(new Var('p'), '^', new Negation(new Var('p')))); // q ^ (p ^ !p)
-	expr2->print();
-	cout << " " << isContradiction(expr2, { 'p', 'q' }) << endl;
-}
-\ No newline at end of file
diff --git a/Sem. 16/README.md b/Sem. 16/README.md
deleted file mode 100644
index 8a445d4..0000000
--- a/Sem. 16/README.md
+++ /dev/null
@@ -1 +0,0 @@
-TBD
diff --git a/Utills/KN_exams_poll/README.md b/Utills/KN_exams_poll/README.md
deleted file mode 100644
index a5a7125..0000000
--- a/Utills/KN_exams_poll/README.md
+++ /dev/null
@@ -1,15 +0,0 @@
-Събеседването ще се проведе **присъствено във ФМИ**.
-
-Събеседването ще се състои и 3-те дни от **16:00 в зала 101**.
-Разпределние по дни:
-| 29.06 | 01.07 | 02.07 |
-|-------|-------|-------|
-| 82097 | 82302 | 81864 |
-| 82264 | 82273 | 82291 |
-| 82178 | 82285 | 82266 |
-| 82281 | 82278 | 82275 |
-| 81930 | 82271 | 82103 |
-| 81928 | 82287 | 82090 |
-|       | 82303 | 82268 |
-|       |       | 82262 |
-|       |       | 81448 |
diff --git a/Utills/KN_exams_poll/poll.txt b/Utills/KN_exams_poll/poll.txt
deleted file mode 100644
index 4ffc75f..0000000
--- a/Utills/KN_exams_poll/poll.txt
+++ /dev/null
@@ -1 +0,0 @@
-https://forms.gle/2ciPStWkxz319C8k9
diff --git a/Utills/KN_exams_poll/schedule.md b/Utills/KN_exams_poll/schedule.md
deleted file mode 100644
index 10f8757..0000000
--- a/Utills/KN_exams_poll/schedule.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Дати:
-
- - 29.06
- - 01.07
- - 02.07
- 
-[Анкета за ден за събеседване](https://forms.gle/2ciPStWkxz319C8k9)
-
diff --git a/Utills/si_14.06/task1/Optional/Optional.hpp b/Utills/si_14.06/task1/Optional/Optional.hpp
deleted file mode 100644
index cf1ec0d..0000000
--- a/Utills/si_14.06/task1/Optional/Optional.hpp
+++ /dev/null
@@ -1,109 +0,0 @@
-#include  <iostream>
-
-template <typename T>
-class Optional
-{
-	T* objPtr;
-
-	void copyFrom(const Optional<T>& other);
-	void free();
-		
-public:
-	Optional();
-	Optional(const T& obj);
-
-	Optional(const Optional& other);
-	Optional<T>& operator=(const Optional<T>& other);
-
-	~Optional();
-
-	void setValue(const T& obj);
-	T getValue() const;
-
-	bool containsValue() const;
-
-	bool operator==(const Optional<T>& other) const;
-	bool operator!=(const Optional<T>& other) const;
-};
-
-template <typename T>
-Optional<T>::Optional() : objPtr(nullptr)
-{};
-
-template <typename T>
-Optional<T>::Optional(const T& obj)
-{
-	objPtr = new T(obj);
-}
-
-template <typename T>
-void Optional<T>::setValue(const T& obj)
-{
-	delete objPtr;
-	objPtr = new T(obj);
-}
-
-template <typename T>
-T Optional<T>::getValue() const
-{
-	if (!obj)
-		throw std::exception("No value assigned!");
-	return *objPtr;
-}
-
-template <typename T>
-bool Optional<T>::containsValue() const
-{
-	return objPtr != nullptr;
-}
-
-template <typename T>
-void Optional<T>::copyFrom(const Optional<T>& other)
-{
-	if (!other.obj)
-		objPtr = nullptr;
-	else
-		objPtr = new T(*other.obj);
-}
-
-template <typename T>
-void Optional<T>::free()
-{
-	delete objPtr;
-}
-
-template <typename T>
-Optional<T>::Optional(const Optional<T>& other)
-{
-	copyFrom(other);
-}
-
-template <typename T>
-Optional<T>& Optional<T>::operator=(const Optional<T>& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-
-	return *this;
-}
-
-template <typename T>
-Optional<T>::~Optional()
-{
-	free();
-}
-
-template <typename T>
-bool Optional<T>::operator==(const Optional<T>& other) const
-{
-	return (!objPtr && !other.objPtr) || (objPtr && other.objPtr && *objPtr == *other.objPtr);
-}
-
-template <typename T>
-bool Optional<T>::operator!=(const Optional<T>& other) const
-{
-	return !operator==(other);
-}
diff --git a/Utills/si_14.06/task1/Source.cpp b/Utills/si_14.06/task1/Source.cpp
deleted file mode 100644
index d8397a0..0000000
--- a/Utills/si_14.06/task1/Source.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-#include  <iostream>
-#include "Optional/Optional.hpp"
-
-
-
-int main()
-{
-	Optional<int> o;
-
-	std::cout << o.containsValue() << std::endl;
-
-	o.setValue(12);
-
-	Optional<int> o2(12);
-
-	std::cout << (o == o2) << std::endl;
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Source.cpp b/Utills/si_14.06/task2/Source.cpp
deleted file mode 100644
index e8e1a2d..0000000
--- a/Utills/si_14.06/task2/Source.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include  <iostream>
-#include "ValueArray/ValueArray.h"
-
-int main()
-{
-	ValueArray v;
-
-	v.addDate("First school day",15, 9, 2021);
-	v.addTime("Work day start", 10, 15);
-	v.addDateTime("Portugal - Germany", 19, 06, 2021, 19, 10);
-	v.addString("Name", "Test");
-
-	v.print();
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/ValueArray/ValueArray.cpp b/Utills/si_14.06/task2/ValueArray/ValueArray.cpp
deleted file mode 100644
index 8e06a95..0000000
--- a/Utills/si_14.06/task2/ValueArray/ValueArray.cpp
+++ /dev/null
@@ -1,72 +0,0 @@
-#include <iostream>
-#include "ValueArray.h"
-#include "../Values/Date/Date.h"
-#include "../Values/Time/Time.h"
-#include "../Values/String/StringValue.h"
-#include "../Values/DateTime/DateTime.h"
-
-void ValueArray::print() const
-{
-	std::cout << "[";
-	for (int i = 0; i < arr.size(); i++)
-	{
-		std::cout << arr[i]->toString();
-
-		if (i != arr.size() - 1)
-			std::cout << ", ";
-
-	}
-	std::cout << "]";
-}
-
-
-void ValueArray::free()
-{
-	for (int i = 0; i < arr.size(); i++)
-		delete arr[i];
-	arr.clear();
-}
-
-void ValueArray::copyFrom(const ValueArray& other)
-{
-	arr.resize(other.arr.size());
-
-	for (int i = 0; i < arr.size(); i++)
-		arr[i] = other.arr[i]->clone();
-}
-
-void ValueArray::addDate(const std::string& name, unsigned day, unsigned month, unsigned year)
-{
-	arr.push_back(new Date(name, day, month, year));
-}
-void ValueArray::addTime(const std::string& name, unsigned hours, unsigned mins)
-{
-	arr.push_back(new Time(name, hours, mins));
-}
-void ValueArray::addString(const std::string& name, const std::string& value)
-{
-	arr.push_back(new StringValue(name,value));
-}
-void ValueArray::addDateTime(const std::string& name, unsigned day, unsigned month, unsigned year, unsigned hours, unsigned mins)
-{
-	arr.push_back(new DateTime(name, day, month, year, hours, mins));
-}
-
-ValueArray::ValueArray(const ValueArray& other)
-{
-	copyFrom(other);
-}
-ValueArray& ValueArray::operator= (const ValueArray& other)
-{
-	if (this != &other)
-	{
-		free();
-		copyFrom(other);
-	}
-	return *this;
-}
-
-ValueArray::~ValueArray()
-{
-	free();
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/ValueArray/ValueArray.h b/Utills/si_14.06/task2/ValueArray/ValueArray.h
deleted file mode 100644
index 39bdcbc..0000000
--- a/Utills/si_14.06/task2/ValueArray/ValueArray.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include <vector>
-#include "../Values/ValueBase/Value.h"
-
-class ValueArray
-{
-	std::vector<Value*> arr;
-
-	void copyFrom(const ValueArray& other);
-	void free();
-
-public:
-	void print() const;
-
-	ValueArray() = default;
-	ValueArray(const ValueArray& other);
-	ValueArray& operator=(const ValueArray& other);
-
-	//factory pattern ? 
-	void addDate(const std::string& name, unsigned day, unsigned month, unsigned year);
-	void addTime(const std::string& name, unsigned hours, unsigned mins);
-	void addString(const std::string& name, const std::string& value);
-	void addDateTime(const std::string& name, unsigned day, unsigned month, unsigned year, unsigned hours, unsigned mins);
-	~ValueArray();
-};
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/Date/Date.cpp b/Utills/si_14.06/task2/Values/Date/Date.cpp
deleted file mode 100644
index 3d872d3..0000000
--- a/Utills/si_14.06/task2/Values/Date/Date.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "Date.h"
-
-//validation is needed for the date fields!
-Date::Date(const std::string& name, unsigned day, unsigned month, unsigned year) : Value(name), year(year), month(month), day(day)
-{}
-
-std::string Date::getDateString() const
-{
-	return std::to_string(day) + "." + std::to_string(month) + "." + std::to_string(year);;
-}
-std::string Date::toString() const
-{
-	return getPrefix() + getDateString() + "}";
-}
-
-Value* Date::clone() const
-{
-	return new Date(*this);
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/Date/Date.h b/Utills/si_14.06/task2/Values/Date/Date.h
deleted file mode 100644
index 6194225..0000000
--- a/Utills/si_14.06/task2/Values/Date/Date.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#pragma once
-
-#include "../ValueBase/Value.h"
-
-class Date : public virtual Value
-{
-	unsigned day;
-	unsigned month;
-	unsigned year;
-
-protected:
-
-	std::string getDateString() const;
-
-public:
-
-	Date(const std::string& name, unsigned day, unsigned month, unsigned year);
-
-	Value* clone() const;
-
-	std::string toString() const;
-};
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/DateTime/DateTime.cpp b/Utills/si_14.06/task2/Values/DateTime/DateTime.cpp
deleted file mode 100644
index b2e7e97..0000000
--- a/Utills/si_14.06/task2/Values/DateTime/DateTime.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "DateTime.h"
-
-DateTime::DateTime(const std::string& name, size_t day, size_t month, size_t year, size_t hours, size_t mins) : Value(name), Date(name, day, month, year), Time(name, hours,mins)
-{}
-
-std::string DateTime::toString() const
-{
-	return getPrefix() + getDateString() + ", " + getTimeString() + "}";
-}
-
-Value* DateTime::clone() const
-{
-	return new DateTime(*this);
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/DateTime/DateTime.h b/Utills/si_14.06/task2/Values/DateTime/DateTime.h
deleted file mode 100644
index 61d6a9a..0000000
--- a/Utills/si_14.06/task2/Values/DateTime/DateTime.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-
-#include "../Date/Date.h"
-#include "../Time/Time.h"
-
-class DateTime : public Date, public Time
-{
-public:
-	DateTime(const std::string& name, size_t day, size_t month, size_t year, size_t hours, size_t mins);
-	
-	std::string toString() const;
-
-	Value* clone() const; 
-};
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/String/StringValue.cpp b/Utills/si_14.06/task2/Values/String/StringValue.cpp
deleted file mode 100644
index 8d47f24..0000000
--- a/Utills/si_14.06/task2/Values/String/StringValue.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "StringValue.h"
-
-StringValue::StringValue(const std::string& name, const std::string& value) : Value(name), value(value)
-{}
-
-std::string StringValue::toString() const
-{
-	return getPrefix() + '\"' + value + '\"' + "}";
-}
-
-Value* StringValue::clone() const
-{
-	return new StringValue(*this);
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/String/StringValue.h b/Utills/si_14.06/task2/Values/String/StringValue.h
deleted file mode 100644
index 4e1500f..0000000
--- a/Utills/si_14.06/task2/Values/String/StringValue.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-#include "../ValueBase/Value.h"
-
-class StringValue : public Value
-{
-	std::string value;
-public:
-
-	StringValue(const std::string& name, const std::string& value);
-	
-	Value* clone() const;
-
-	std::string toString() const;
-};
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/Time/Time.cpp b/Utills/si_14.06/task2/Values/Time/Time.cpp
deleted file mode 100644
index 5b49e54..0000000
--- a/Utills/si_14.06/task2/Values/Time/Time.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "Time.h"
-
-//validation is needed for the time fields!
-Time::Time(const std::string& name, unsigned hours, unsigned mins) : Value(name), hours(hours), mins(mins)
-{}
-
-std::string Time::getTimeString() const
-{
-	return std::to_string(hours) + ":" + std::to_string(mins);
-}
-std::string Time::toString() const
-{
-	return getPrefix() + getTimeString() + "}";
-}
-
-Value* Time::clone() const
-{
-	return new Time(*this);
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/Time/Time.h b/Utills/si_14.06/task2/Values/Time/Time.h
deleted file mode 100644
index 1d93d49..0000000
--- a/Utills/si_14.06/task2/Values/Time/Time.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#pragma once
-
-#include "../ValueBase/Value.h"
-
-class Time : public virtual Value
-{
-	unsigned hours;
-	unsigned mins;
-
-protected:
-	std::string Time::getTimeString() const;
-
-public:
-	Time(const std::string& name, unsigned hours, unsigned mins);
-
-	Value* clone() const;
-
-	std::string toString() const;
-};
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/ValueBase/Value.cpp b/Utills/si_14.06/task2/Values/ValueBase/Value.cpp
deleted file mode 100644
index cd7c821..0000000
--- a/Utills/si_14.06/task2/Values/ValueBase/Value.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-#include "Value.h"
-
-Value::Value(const std::string& valueName) : valueName(valueName)
-{
-
-}
-
-std::string Value::getPrefix() const
-{
-	return "{ " + valueName + " : ";
-}
-\ No newline at end of file
diff --git a/Utills/si_14.06/task2/Values/ValueBase/Value.h b/Utills/si_14.06/task2/Values/ValueBase/Value.h
deleted file mode 100644
index e3320f3..0000000
--- a/Utills/si_14.06/task2/Values/ValueBase/Value.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#pragma once
-#include <string>
-
-class Value
-{
-protected:
-	std::string valueName;
-public:
-	Value(const std::string& valueName);
-
-	std::string getPrefix() const;
-
-	virtual std::string toString() const = 0;
-
-	virtual Value* clone() const = 0;
-
-	virtual ~Value(){}
-};
-\ No newline at end of file