ing System;
using System.Collections.Generic;
using System.Linq;

namespace abc047
{
    public class Program
    {
        public static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split(' ');

            List<int> list = new List<int>();
            list.Add(Convert.ToInt32(str[0]));
            list.Add(Convert.ToInt32(str[1]));
            list.Add(Convert.ToInt32(str[2]));

            int avg = (from item in list select item).Sum() / 2;

            if (avg * 2 != (from item in list select item).Sum()) {
                Console.WriteLine("No");
            }
            else if ((from item in list where item == avg select item).Count() > 0)
            {
                Console.WriteLine("Yes");
            }
            else if ((from item in list where item < avg select item).Sum() == avg)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }
        }
    }
}