using System;
class Program
{
    static void Main()
    {
        string type = Console.ReadLine().ToLower();
        var rows = double.Parse(Console.ReadLine());
        var cols = double.Parse(Console.ReadLine());

        double full = rows * cols;
        double total = 0;

        switch (type)
        {
            case "premiere":
                total = full * 12.00;
                break;
            case "normal":
                total = full * 7.50;
                break;
            case "discount":
                total = full * 5.00;
                break;
        }
        Console.WriteLine("{0:F2} leva", total);
    }
}