package algo;

import java.util.Scanner;

public class sample7 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt() + 1;
		int B = sc.nextInt();
		if(A < B) {
			System.out.println("No");
			System.out.println(B - A);
		}
		else {
			System.out.println("Yes");
			System.out.println(A - B);
		}
	}
}