Cinema

namespace Cinema
{
    using System;

    class Cinema
    {
        static void Main()
        {
            var movie = Console.ReadLine().ToLower();
            var rows = int.Parse(Console.ReadLine());
            var columns = int.Parse(Console.ReadLine());

            double price = 0.0;

            switch (movie)
            {
                case "premiere": price = 12.0; break;
                case "normal": price = 7.5; break;
                case "discount": price = 5.0; break;
                default:
                    break;
            }

            Console.WriteLine("{0:f2}", rows * columns * price);
        }
    }
}