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

namespace Practice
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse (Console.ReadLine());
            int minSum = int.MaxValue;
            int maxSum = int.MinValue;
            int maxdiff = int.MinValue;
            int previousSum = 0;
            for (int i = 0; i < n; i++)
            {
                int firstNumber = int.Parse (Console.ReadLine());
                int sec0ndNumber = int.Parse(Console.ReadLine());
                int sum = firstNumber + sec0ndNumber;
                if (sum<minSum)
                {
                    minSum = sum;
                }
                if (sum>maxSum)
                {
                    maxSum = sum;
                }
                if (maxdiff< sum-previousSum)
                {
                    maxdiff = sum - previousSum;
                }
                previousSum = sum;
            }
            if (maxSum==minSum)
            {
                Console.WriteLine("Yes, value={0}",maxSum);
            }
            else
            {
                Console.WriteLine("No, maxdiff={0}",Math.Min(maxSum-minSum, maxdiff));
            }
        }
    }
}