using System;

public class Program

{

    public static void Main()

    {

        //Sebastián Morán

        int a, b = 0, c = 0 ;

        Console.WriteLine("Write as many numbers as you want but once you write 0, I'll tell you the average of all the numbers you wrote before writing zero");

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

        while( a != 0)

        {

            if ( a%2 == 0)

            {

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

                b++;

            }

            else

            {

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

                c++;

            }   

        }

        Console.WriteLine("Even numbers: " + b  );

        Console.WriteLine("Odd numbers: " + c  );       

​

    }

}