using System;

public class Program

{

    public static void Main()

    {

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

            int evenSum = 0;

            int oddSum = 0;

​

            for (int i = 1; i <= n; i++)

            {

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

​

                if (i % 2 == 0)

                {

                    evenSum += number;

                }

                else

                {

                    oddSum += number;

                }

            }

​

            if (evenSum == oddSum)

            {

                Console.WriteLine("Yes");

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

            }

            else

            {

                Console.WriteLine("No");

                Console.WriteLine($"Diff = {Math.Abs(evenSum - oddSum)}");

            }

    }

}