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, d;
			string[] input = Console.ReadLine().Split(' ');
			a = int.Parse(input[0]);
			b = int.Parse(input[1]);
			c = int.Parse(input[2]);
			d = (a + b + c) / 2;

			if (a == d || b == d || c == d) {
				Console.WriteLine("Yes");
			} else {
				Console.WriteLine("No");
			}
		}
	}
}