using System;

​

public class Program

{

    public static void Main()

    {

        //Daniela Fernández Loya

        int num;

        Console.WriteLine("Write a number from 1-20");

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

        while(num > 20 | num < 1)

        {

            Console.WriteLine("Try it again that number isn´t from 1-20");

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

        }   

            Console.WriteLine("Good job!");

    }

}