using System;

public class Program

{

    public static void Main()

    {

    string typeTicket = Console.ReadLine().ToLower();

    var Rows = double.Parse(Console.ReadLine());    

    var Columns = double.Parse(Console.ReadLine()); 

    var Sum = 0.00; 

    switch(typeTicket)  

    {

    case "premiere":

    Sum = Rows*Columns*12.00;

    break;

    case "normal":

    Sum = Rows*Columns*7.50;

    break;  

    case "discount":

    Sum = Rows*Columns*5;

    break;  

    }   

        Console.WriteLine("{0:f2} leva",Sum);

    }

}