[백준] 4101번

import java.util.*;
import java.io.*;
import java.math.*;

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

      int A, B;  // 입력받을 변수

      while(true) {
         A = sc.nextInt();
         B = sc.nextInt();

         if (A == 0 && B == 0) break;
         System.out.println(A > B ? "Yes" : "No");
      }
   }
}