namespace SumOfElements
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    class SumOfElements
    {
        static void Main()
        {
            string sequence = Console.ReadLine();
            List<string> input = sequence.Split(' ').ToList();
            List<long> numbers = new List<long>();
            long currentNum = 0;

            for (int i = 0; i < input.Count; i++)
            {
                numbers.Add(long.Parse(input[i]));
            }

            for (int i = 0; i < numbers.Count; i++)
            {
                if (currentNum < numbers[i])
                {
                    currentNum = numbers[i];
                }
            }

            numbers.Remove(currentNum);
            if (numbers.Sum() == currentNum)
            {
                Console.WriteLine("Yes, sum={0}", currentNum);
            }
            else
            {
                Console.WriteLine("No, diff={0}", numbers.Sum() - currentNum);
            }
        }
    }
}