백준 #4101번 크냐?

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int a, b;
		
		a = sc.nextInt();
		b = sc.nextInt();
		
		while(a != 0 && b != 0) {
			if(a > b) {
				System.out.println("Yes");
			}else {
				System.out.println("No");
			}
			a = sc.nextInt();
			b = sc.nextInt();
		}
		sc.close();
	}
}