UVA 12149 - Feynman_Solution

/*
Tanzila Islam
Southeast University
mail : tanzilamohita@gmail.com
Problem Link:
https://uva.onlinejudge.org/external/121/p12149.pdf
*/

#include<iostream>
#include<cstdio>
using namespace std;

int main(){
int N;
while(scanf("%d",&N)==1)
{
if(N==0) 

break;

int i;
long long int sum=0;
 for(i=1;i<=N;i++){
   sum=sum + (i*i);
  }
cout << sum << endl;
}
return 0;
}