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 Rust (1.42.0) (judge verdict: Runtime Error)

fn main() {
  let input = gets::<i32>();
  let a = input[0];
  println!("{}", a*a*a+a*a+a);
}

fn gets<T: std::str::FromStr>() -> Vec<T> {
  let mut line = String::new();
  std::io::stdin().read_line(&mut line).unwrap();
  line.split(' ').filter_map(|s|s.parse().ok()).collect()
}