#include <iostream> using namespace std; int main() { int num; cin >> num; int sum = 0; for (int i = 1; i <= num; i++) { if (i % 7 == 0) { sum += i; } } cout << sum; return 0; }
#include <iostream> using namespace std; int main() { int num; cin >> num; int sum = 0; for (int i = 1; i <= num; i++) { if (i % 7 == 0) { sum += i; } } cout << sum; return 0; }