initial

1sem/adaptation courses/4/14.cpp

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+// ac_4_14.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <cmath>
+using namespace std;
+
+double inline ai(int i) {
+    return ((i%3 == 0)? (i / 3.) : (i / (i - 3.)));
+}
+
+double sai(int i) {
+    double out = 0;
+    for (int k = 1; k <= i; k++) {
+        auto fr = ai(k);
+        out += pow(fr, 2);
+    }
+    return out;
+}
+
+int main() {
+    int N;
+    cout << "N >>>";
+    cin >> N;
+    cout << "S= " << sai(N) << endl;
+}