using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var va = Console.ReadLine().Split().Select(int.Parse).ToArray();
            string s = va[1] > va[0] ? "YES" : "NO";
            int n = Math.Abs(va[0] + 1 - va[1]);
            Console.WriteLine(s);
            Console.WriteLine(n);
        }
    }
}