using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("How much is a cup of coffee");

        double price = double.Parse(Console.ReadLine());

        Console.WriteLine("How many cups of coffee have you bought");

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

        Console.WriteLine(cups/10+" free cups of coffee");

        Console.WriteLine("A total of: " + (cups-cups/10)*price);

    }

}