import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int x = scan.nextInt();
    	if(n == 1){
    		System.out.println("No");
    	}else{
    		System.out.println("Yes");
    	}
    }
}