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