#include<iostream>
#include<math.h>
using namespace std;
int tong(int n);
int main()
{
	for (auto i = 1; i <= 5; i ++) {
		cout << "N = " << i << ", ";
		cout << "S = " << tong(i) << endl;
	}
	return 0;
}

int tail_tong(int n, int result) {
	if (n > 1) {
		return tail_tong(n - 1, result + n * n);
	}
	return result;
}

int tong(int n)
{
	return tail_tong(n, 1);
}