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;

fn read_i32_exn() -> i32 {
	let mut n = String::new();
	io::stdin().read_line(&mut n).expect("Failed to input");
	(*n).trim().parse::<i32>().unwrap()

}

fn main() {
   	let x = read_i32_exn();
	println!("{}",match x { 3|5|7 => "YES", _x => "NO",});

}