using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Tell me a number from 1 to 10 and I'll tell you if it is even or odd");

        int num;

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

        switch (num)

        {

            case 0:

                Console.WriteLine("That's not a valid number, because it isn't even or odd");

                break;

            case 1:

            case 3:

            case 5:

            case 7:

            case 9:

                Console.WriteLine("This number is odd");    

                break;

            case 2:

            case 4:

            case 6:

            case 8:

            case 10:

                Console.WriteLine("This number is even");

                break;

            default:

                Console.WriteLine("That number isn't allowed, try again");

                break;

        }

    }

}