#include <cstdio>

int main()
{
  int a;
  scanf("%d", &a);
  printf("%d\n", a+a*a+a*a*a);
  return 0;
}

### Prompt

Create a solution in cpp for the following problem:

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 <cstdio>

int main()
{
  int a;
  scanf("%d", &a);
  printf("%d\n", a+a*a+a*a*a);
  return 0;
}

```