4

using System;

namespace chetna_nechetna
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = int.Parse(Console.ReadLine());
            var chetno = 0;
            var nechetno = 0;
            for (var i = 0; i<n; i++)
            {
                var element = int.Parse(Console.ReadLine());
                if (i % 2 == 0)
                {
                    nechetno += element;
                }
                else
                {
                    chetno += element;
                }
            }
            if (chetno == nechetno)
            {
                Console.WriteLine("Yes");
                  Console.Write("Sum = " + chetno);
            }
            else
            {
                Console.WriteLine("No");
                Console.Write("Diff = " +
                    Math.Abs(nechetno - chetno));
            }
        }
    }
}