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++ (GCC 9.2.1) (judge verdict: Accepted)

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr int Inf = 1000000010;
constexpr ll INF= 1000000000000000000;
constexpr ll MOD = 1000000007;
const double PI = 3.1415926535897;
typedef pair<int,int> P;

template<typename T>
T Pow(T a,T b) {
    T ret = 1;
    for(int i = 0;i < b;i++) {
        ret *= a;
    }
    return ret;
}

ll mod(ll val) {
    ll res = val % MOD;
    if(res < 0) {
        res += MOD;
    }
    return res;
}

ll RS(ll N, ll P, ll M){
    if(P==0) return 1;
    if(P < 0) {
        return 0;
    }
    if(P%2==0){
        ll t = RS(N, P/2, M);
        return t*t % M;
    }
    return N * RS(N, P-1, M) % M;
}

int main() {
    int A;
    cin >> A;
    cout << A + A * A + A * A * A << endl;
}