Problem:
Score : 100 points

Problem Statement

Shichi-Go-San (literally "Seven-Five-Three") is a traditional event in a certain country to celebrate the growth of seven-, five- and three-year-old children.

Takahashi is now X years old. Will his growth be celebrated in Shichi-Go-San this time?

Constraints

1 ≤ X ≤ 9

X is an integer.

Input

Input is given from Standard Input in the following format:

X

Output

If Takahashi's growth will be celebrated, print YES; if it will not, print NO.

Sample Input 1

5

Sample Output 1

YES

The growth of a five-year-old child will be celebrated.

Sample Input 2

6

Sample Output 2

NO

See you next year.

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

use std::io;

#[cfg(test)]
mod tests;

fn main() {
    a();
    b();
    c();
    d();
}

fn a() {
    let mut buf = String::new();
    let handle = io::stdin();
    handle.read_line(&mut buf).unwrap();
    let n: isize = buf.trim().parse().unwrap();
    match n {
        3 | 5 | 7 => {
            println!("{}", "YES");
        },
        _ => {
            println!("{}", "NO");
        },
    }
}

fn b() { 
}

fn c() { 
}
fn d() { 
}