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

namespace ABC047A
{
    class Program
    {
        static void Main(string[] args)
        {
            int a, b, c;

            var word = Console.ReadLine().Split(' ');

            a = int.Parse(word[0]);
            b = int.Parse(word[1]);
            c = int.Parse(word[2]);

            if ((a + b) == c || (b + c) == a || (a + c) == b || a == b && b == c)
            {
                Console.WriteLine("Yes");
            }            

            else
            {
                Console.WriteLine("No");
            }

            Console.ReadKey();
        }
    }
}
