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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;
import java.util.Locale;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class Main {
  public static void main(String[] args ){

    Scanner sc = new Scanner(System.in);
    int X = sc.nextInt();
    boolean flag = false;
    if (X == 7 || X == 5 || X == 3){
      flag = true;
    }

    System.out.println(flag ? "YES" : "NO");
  }
}