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

namespace Exam02
{
    class Exam02
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            long oddSum = 0;
            long evenSum = 0;
            for (int i = 0; i < n; i++)
            {
                long number1 = long.Parse(Console.ReadLine());
                long number2 = long.Parse(Console.ReadLine());
                    oddSum += number1;
                    evenSum += number2;
            }
            if (evenSum==oddSum)
            {
                Console.WriteLine("Yes, sum={0}",evenSum);
            }
            else
            {
                if (oddSum>evenSum)
                {
                    Console.WriteLine("No, diff={0}",oddSum-evenSum);
                }
                else
                {
                    Console.WriteLine("No, diff={0}", evenSum-oddSum);
                }
            }
        }
    }
}