using System;

namespace OddEvenSumm1
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            double sumnum = 0;

            double number = 0;

            double sumnumr = 0;

            for (int i = 0; i < n; i++)

            {


                number = int.Parse(Console.ReadLine());



                if (n % 2 == 0) { double a = number;  sumnum +=a; }

                if (n % 2 != 0) { double b = number; sumnumr += b; }





            }



            if (sumnum == sumnumr)

            {

                Console.WriteLine("Yes");

                Console.WriteLine($"Sum = {sumnum}");

            }

            else if (sumnum != sumnumr)

            {

               double finsum = sumnum - sumnumr;

                Console.WriteLine("No");

                Console.WriteLine($"Diff = {Math.Abs(finsum)}");


            }
        }
    }
}