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#include <iostream>
void swap(double &a, double &b) {
double temp = a;
a = b;
b = temp;
}
void swapColumns(double* mat, unsigned int rows, unsigned int cols, unsigned int column1, unsigned int column2) {
if (column1 >= cols || column2 >= cols)
return;
for (unsigned int row = 0; row < rows; row++)
/* За повече информация защо така индексираме в матриците, вижте
* https://syndamia.com/teaching/upp-2025/cpp-pitfalls/#-int73-vs-int3-vs-int
*/
swap(mat[row * cols + column1], mat[row * cols + column2]);
}
int main() {
const unsigned int ROWS = 3, COLS = 5;
double mat[ROWS][COLS];
for (unsigned int i = 0; i < ROWS; i++)
for (unsigned int j = 0; j < COLS; j++)
std::cin >> mat[i][j];
unsigned int col1, col2;
std::cin >> col1 >> col2;
swapColumns((double*)mat, ROWS, COLS, col1, col2);
for (unsigned int row = 0; row < ROWS; row++) {
for (unsigned int col = 0; col < COLS; col++)
std::cout << mat[row][col] << ' ';
std::cout << std::endl;
}
return 0;
}
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