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

class Magatro
{
    static int a, b, c;
    static void Main()
    {
        Read();
        if (c == a + b)
        {
            Console.WriteLine("Yes");
        }
        else
        {
            Console.WriteLine("No");
        }
    }
    static void Read()
    {
        int[] q = Console.ReadLine().Split(' ').Select(s => int.Parse(s)).ToArray();
        Array.Sort(q);
        a = q[0];
        b = q[1];
        c = q[2];
    }
}