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

namespace ConsoleApplication20
{
    class Program
    {
        static void Main(string[] args)
        {
            var a = Console.ReadLine().Split().Select(int.Parse).ToArray();
            if (a[0] + a[1] == a[2] || a[0] + a[2] == a[1] || a[1] + a[2] == a[0])
                Console.WriteLine("Yes");
            else Console.WriteLine("No");
        }
    }
}
