using System;

public class Program

{

    public static void Main()

    {

        int n;

        Console.Write("Please enter the number of stations :");

        n = Convert.ToInt32(Console.ReadLine());

        if(n>=1 && n<=2)

            Console.Write("Price = 20 Bath");

        else if(n>=3 && n<=5)

            Console.Write("Price = 30 Bath");

        else if(n>=6 && n<=8)

            Console.Write("Price = 50 Bath");

        else

            Console.Write("Out of service");

    }

}