using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(CountAllEvenNumbers (new []{10, 21 , 23, 14, 5, 1, 28, 44}));

    }

    public string GetDeviceInfo(IDevice device)

    {

        var deviceInfo = string.Empty;

        switch (device.GetTypeName)

        {

            case MONITOR:

                var monitor = device as Monitor;

                deviceInfo = $"{monitor.Name}, {monitor.Width}x{monitor.Height}";

                break;

            case PRINTER:

                var printer = device as Printer;

                deviceInfo = $"{printer.Model}, {printer.IPAddress}";

                break;

            case ROUTER:

                var router = device as Router;

                deviceInfo = $"{router.Name}, {router.Speed}";

                break;

        }

        return deviceInfo;

    }

}