using System;

class EqualPairs
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        int maxDiff = 0;

        int num1 = int.Parse(Console.ReadLine());
        int num2 = int.Parse(Console.ReadLine());
        int previousSum = num1 + num2;
        for (int i = 0; i < n - 1; i++)
        {
            num1 = int.Parse(Console.ReadLine());
            num2 = int.Parse(Console.ReadLine());
            int currentSum = num1 + num2;
            if (currentSum != previousSum && maxDiff < (Math.Abs(currentSum - previousSum)))
            {
                maxDiff = Math.Abs(currentSum - previousSum);
            }
            previousSum = currentSum;
        }
        Console.WriteLine(maxDiff == 0 ? $"Yes, value={previousSum}" : $"No, maxdiff={maxDiff}");
    }
}