using System;

public class Program

{

    public static void Main()

    {

        double total;

        int quantity;

        double money;

        Console.WriteLine("how many unicorns do you want to buy?");

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

        money = 599.99;

        total = quantity * money;

        Console.WriteLine("your total is £ " + total);

    }

}