using System;

public class Program

{

    public static void Main()

    {

          int num, evens=0, odds = 0;

            Console.Write("Digit = ");

            for (int i = 1; i <= 10; i++)

            {

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

                if (num % 2 == 0)

                    evens+=num;

                else

                    odds+=num;

            }

​

         if(evens==odds)

             Console.WriteLine("yes");

        else

            Console.WriteLine("no");

    }

}