UVa 10302 - Summation of Polynomials

// UVa 10302 - Summation of Polynomials

#include <iostream>
using namespace std;

#define datatype unsigned long long int

int main() {
	datatype x;
	while (cin >> x) {
		cout << x * x * (x + 1) * (x + 1) / 4 << endl;
	}
	return 0;
}