Equal pairs

using System;

namespace Upr_4_for
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int maxDiff = 0;
            int value = 0;
            int sum = 0;


            for (int i = 1; i <= n; i++)
            {

                sum = value;

                int number1 = int.Parse(Console.ReadLine());
                int number2 = int.Parse(Console.ReadLine());
                value = number1 + number2;

                maxDiff = Math.Abs(value - sum);
                //if (value > sum)
                //{
                //    maxDiff = value - sum;
                //}


            }


            if (n == 1)
            {
                Console.WriteLine($"Yes, value={value}");
            }

            else
            {
                if (value == sum)
                {
                    Console.WriteLine($"Yes, value={value}");
                }
                else
                {
                    Console.WriteLine($"No, maxdiff={maxDiff}");
                }
            }

         }
    }
}