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

namespace ABC037A
{
	class Program
	{
		static void Main(string[] args)
		{
			string[] n = Console.ReadLine().Split(' ');
			int a = int.Parse(n[0]);
			int b = int.Parse(n[1]);
			int c = int.Parse(n[1]);

			if (a == (b + c))
				Console.WriteLine("Yes");

			else if (b == (a + c))
				Console.WriteLine("Yes");

			else if (c == (a + b))
				Console.WriteLine("Yes");

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