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;
using ll = long long;
using vpii = vector<pair<int,int>>;
using vpll = vector<pair<ll,ll>>;
using vi = vector<int>;
#define rep(i,n) for(int i=0;i<(int) n;i++)
#define rep1(i,m,n) for(int i=(int) m;i<(int) n;i++)
#define fix(n) cout << fixed << setprecision((int)n)

void absll(ll &x) {
    if(x>=0) return ;
    else x=-x; return;
}

template<class T> inline bool chmax(T &a, T b) {
    if(a<b) {
        a=b; return 1;
    } 
    return 0;
}

template<class T> inline bool chmin(T &a, T b) {
    if(a>b) {
        a=b; return 1;
    } 
    return 0;
}

const ll INF = 1LL << 60;

int N;

//DPテーブル
vector<ll> dp(100010);

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