#include <bits/stdc++.h>
using namespace std;
int main (){
int a = 0;
cin >> a;
cout << a+a*a+a*a*a ;

}
### Prompt

Please provide a cpp coded solution to the problem described below:

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.

Examples

Input

2


Output

14


Input

10


Output

1110

### Response

```cpp
#include <bits/stdc++.h>
using namespace std;
int main (){
int a = 0;
cin >> a;
cout << a+a*a+a*a*a ;

}
```