#include <iostream>
using namespace std;

int a=2;

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

Develop a solution in Cpp 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 <iostream>
using namespace std;

int a=2;

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