Problem:
Score : 100 points

Problem Statement

Given an integer a as input, print the value a + a^2 + a^3.

Constraints

1 \leq a \leq 10

a is an integer.

Input

Input is given from Standard Input in the following format:

a

Output

Print the value a + a^2 + a^3 as an integer.

Sample Input 1

2

Sample Output 1

14

When a = 2, we have a + a^2 + a^3 = 2 + 2^2 + 2^3 = 2 + 4 + 8 = 14.

Print the answer as an input. Outputs such as 14.0 will be judged as incorrect.

Sample Input 2

10

Sample Output 2

1110

Solution in C++ (Clang 10.0.0) (judge verdict: Wrong Answer)

#include <iostream>
using namespace std;
int main(void){
    long N, b, ans;
    cin >> N;
    for(long K = 1;K<=N;K++){
        b = 0;
        for(long a = 1;a<=K;a++)
            if(K%a==0){
            b++;
            }
        ans = ans+(K*b);
    }
    cout << ans;
}