using System;

​

public class Program

{

    public static void Main()

    {

        var num = int.Parse(Console.ReadLine());

        var chetno = 0;

        var nechetno = 0;

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

        {

            var vuvedenoChislo = int.Parse(Console.ReadLine());

            if (i % 2 == 0)

            {

                chetno += vuvedenoChislo;

            }

            else

            {

                nechetno += vuvedenoChislo;

            }

        }

​

        if (chetno == nechetno)

        {

            Console.WriteLine("Yes");

            Console.WriteLine("Sum=" + nechetno);

        }

        else

        {

            Console.WriteLine("No");

            Console.WriteLine("Diff=" + Math.Abs(nechetno - chetno));

        }

    }

}