MaxDifference

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

namespace @byte
{
    class Program
    {
        static void Main(string[] args)
        {
            int countOfRepeats = int.Parse(Console.ReadLine());

            int currentSum = 0;
            int previousSum = 0;

            int maxDifference = 0;

            for (int currentRepeat = 0; currentRepeat < countOfRepeats; currentRepeat++)
            {
                previousSum = currentSum;

                int firstNumber = int.Parse(Console.ReadLine());
                int secondNumber = int.Parse(Console.ReadLine());

                currentSum = firstNumber + secondNumber;

                int difference = Math.Abs(currentSum - previousSum);

                if (currentRepeat >= 1 && difference > maxDifference)
                {
                    maxDifference = difference;
                }
            }

            if (maxDifference == 0)
            {
                Console.WriteLine($"Yes, value={currentSum}");
            }
            else
            {
                Console.WriteLine($"No, maxdiff={maxDifference}");
            }
        }
    }
}