using System;

public class Program

{

    public static void Main()

    {

        int Number_of_children ;

        Console.WriteLine("عدد الطلاب الذين سجلوا لدوره الكراتيه");

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

        if(Number_of_children>15)

        {

        Console.WriteLine("Send a message that the course is open");

        Console.WriteLine("Show subscriber count");

        }

        else

        {

        Console.WriteLine("Send a message that there are few subscribers");

        Console.WriteLine("Show how many subscribers the period is missing");

        }

    }

}