using System;

public class Program

{

    public static void Main()

    {

        int n;

        Console.WriteLine("Please enter the number of station:");

        n= Convert.ToInt16(Console.ReadLine());

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

            Console.WriteLine("Price = 20 Baht");

        }

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

            Console.WriteLine("Price = 30 Baht");

        }

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

            Console.WriteLine("Price = 50 Baht");

        }

        else{

            Console.WriteLine("Out of service");

        }

    }

}