Pairs

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

class Program
{
    static void Main(string[] args)
    {
        string a = Console.ReadLine();
        string[] spaces = a.Split(' ');
        int[] array = new int[spaces.Length];
        int b = 0;

        for (int i = 0; i < spaces.Length; i++)
        { //0 1 2 3 4 5 6 7
            //          0 1 ; 2 3; 4 5; 67

            array[i] = int.Parse(spaces[i]);
        }
        int[] results = new int[spaces.Length / 2];
        for (int i = 0; i < spaces.Length / 2; i++)
        {
            results[i] = array[i + b] + array[i + b + 1];
            b++;
        }
        for (int i = 0; i < spaces.Length / 2; i++)
        {
            if (results[i] == results.Average())
            {
                Console.WriteLine("Yes, value={0}", results[i]);
                break;
            }
            else
            {

                Console.WriteLine("No, maxdiff={0}", Math.Abs(results.Min() - results.Max()));
                break;
            }
        }
    }
}