using System;

public class Problem
{
  public static void Main()
  {
    string[] s = Console.ReadLine().Split(' ');
	int.TryParse(s[0], out int a);
    int.TryParse(s[1], out int b);
    int.TryParse(s[2], out int c);
    if (a + b == c || a + c == b || b + c == a)
      Console.WriteLine("Yes");
    else
      Console.WriteLine("No");
  }
}