using System;
using System.Linq;

public class Program
{
	public static void Main()
	{
		int[] nums = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
      bool containsSum=false;
            for (int i = 0; i < nums.Length; i++)
                for (int j = i + 1; j < nums.Length; j++)
                {
                    int a = nums[i];
                    int b = nums[j];
                    int sum = a + b;
                    if (nums.Contains(sum))
                    {   Console.WriteLine($"{a} + {b} == {sum}");
                     containsSum = true;
                    }
                    //else if (a + b != sum)
                        //Console.WriteLine("No");
                    //else if (a == 1 && b == 1)
                        //Console.WriteLine("No");
                      }
      if(!containsSum)
        Console.WriteLine("No");
	}
}