using System;

​

public class Program

{

    public static void Main()

    {

        int n1 = int.Parse(Console.ReadLine());

        if (n1 > 15)

        {

            Console.WriteLine("the class is open");

            Console.WriteLine("number of kids:" + n1);

        }

        else

        {

            Console.WriteLine("number of kids are below than 15");

            int num = 15-n1;

            Console.WriteLine("number of kids till 15:"+num);

        }

    }

}