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: Accepted)

use std::io::{self};

fn main() {
    let mut buffer1 = String::new();
    let a: u32 = match io::stdin().read_line(&mut buffer1) {
        Ok(_) => {
            buffer1.trim().parse::<u32>().ok().expect("woops")
        },
        Err(_) => 0
    };

    let ans = exec_calc(a);

    println!("{:?}", ans);
    return;
}

fn exec_calc(a: u32) -> u32 {
    return a + (a * a) + (a * a * a)
}

#[test]
fn test_exec_calc() {
    let ans = exec_calc(2);
    assert_eq!(ans, 14);
}