uri 1323 solution in cpp

 

uri 1323 solution in cpp

by ujjal roy                  

#include<bits/stdc++.h>

using namespace std;

main()

{

    int n;

    while(cin>>n)

    {

        if(n==0) break;

        cout<<((n*(n+1))*(2*n+1))/6<<endl;

    }

    return 0;

}