From 9242ebc4c69f2c1f550ddcc0e9235f3f409554c7 Mon Sep 17 00:00:00 2001
From: Syndamia <kamen@syndamia.com>
Date: Sat, 1 Nov 2025 20:27:21 +0200
Subject: feat(Week05): Add exercises and solutions

---
 Week05/Exercise09.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Week05/Exercise09.cpp

(limited to 'Week05/Exercise09.cpp')

diff --git a/Week05/Exercise09.cpp b/Week05/Exercise09.cpp
new file mode 100644
index 0000000..adcd5b1
--- /dev/null
+++ b/Week05/Exercise09.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+
+int main()
+{
+    double z;
+    unsigned int n;
+    std::cin >> z >> n;
+
+    double base = z - 1;
+    double sum = 0;
+
+    for (unsigned int i = 1; i <= n; i++) {
+        double to_power = 1;
+
+        for (unsigned j = 1; j <= i; j++) {
+            to_power *= base;
+        }
+
+        sum += ((i + 1) % 2 ? -1.0 : 1.0) * to_power / i;
+    }
+
+    std::cout << sum << std::endl;
+
+    return 0;
+}
-- 
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