import java.util.*;
import java.lang.Math;

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