Problem:
Score : 100 points

Problem Statement

Takahashi is going to set a 3-character password.

How many possible passwords are there if each of its characters must be a digit between 1 and N (inclusive)?

Constraints

1 \leq N \leq 9

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

Print the number of possible passwords.

Sample Input 1

2

Sample Output 1

8

There are eight possible passwords: 111, 112, 121, 122, 211, 212, 221, and 222.

Sample Input 2

1

Sample Output 2

1

There is only one possible password if you can only use one kind of character.

Solution in Rust (1.15.1) (judge verdict: Accepted)

#[allow(unused_imports)]
use std::io;

#[allow(unused_macros)]
macro_rules! get {
    ($i:ident) => {
        let mut $i = String::new();
        io::stdin().read_line(&mut $i).ok();
    };
}

#[allow(unused_macros)]
macro_rules! to_vec {
    ($s:ident, $t:ty) => {
        $s.split_whitespace().map(|i| i.parse().ok().unwrap()).collect::<Vec<$t>>()
    }
}

#[allow(unused_macros)]
macro_rules! parse {
    ($s:ident, $t:ty) => {
        $s.trim().parse::<$t>().ok().unwrap()
    }
}

#[allow(unused_macros)]
macro_rules! max {
    ($v:ident) => {
        $v.iter().max().unwrap()
    };
}

#[allow(unused_mut)]
fn main() {
    get!(s);
    let n = parse!(s, i32);

    println!("{}", n * n * n);
}