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 Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.Scanner;
import java.util.Set;

public class Main {

	/** 七五三の数字のセット */
	private static final Set<Integer> SET = Set.of(3, 5, 7);

	public static void main(String[] args) {
		try (Scanner scanner = new Scanner(System.in)) {
			int x = scanner.nextInt();
			System.out.println(SET.contains(x) ? "YES" : "NO");
		}
	}
}