import java.util.*;

public class Exercise122{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    double a = sc.nextDouble();
    double b = sc.nextDouble();
    double p1 = (1 - a) * b;
    double p2 = a * (1 - b) * b;
    if(p1 < p2){
      System.out.println("YES");
    }else{
      System.out.println("NO");
    }
	}
}