namespace Atcoder_047
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] input = Console.ReadLine().Split(' ');
            int a = Int32.Parse(input[0].ToString());
            int b = Int32.Parse(input[1].ToString());
            int c = Int32.Parse(input[2].ToString());

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