import java.util.*;

public class Main {
    public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      int s = sc.nextInt();

      if((s / 100 == 4) || (s / 100 == 5)) {
        System.out.println("Yes");
      }else {
        System.out.println("No");
      }
    }
}