using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PastryShop
{
    class Program
    {
        static void Main(string[] args)
        {
            string sweets = Console.ReadLine();
            int countOfOrderedSweats = int.Parse(Console.ReadLine());
            int dayOfDecember = int.Parse(Console.ReadLine());
            double promotionBetwen100and200Leva = 0;
            double promotionUnder200leva = 0;
            double currentPrice = 0;
            double promotionTill15December = 0.10 * currentPrice;
            double cakePrice = 0;
            double baklavaPrice = 0;
            double soufllePrice = 0;
            bool price = false;

            double totalPrice = 0;
            //if (dayOfDecember>=1 && dayOfDecember <=24)
            if (dayOfDecember >= 1 && dayOfDecember <= 15)
            {
                switch (sweets)
                {
                    case "Cake":
                        currentPrice = 24 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Souffle":
                        currentPrice = 6.66 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Baklava":
                        currentPrice = 12.60 * countOfOrderedSweats;
                        price = true;
                        break;
                    default:
                        break;
                }
                if (price)
                {
                    if (currentPrice > 200)
                    {
                        promotionUnder200leva = 0.25 * currentPrice;
                        totalPrice = currentPrice - promotionUnder200leva;
                        promotionTill15December = 0.10 * totalPrice;
                        totalPrice -= promotionTill15December;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                    else if (currentPrice <= 200 && currentPrice >= 100)
                    {
                        promotionBetwen100and200Leva = 0.15 * currentPrice;
                        totalPrice = currentPrice - promotionBetwen100and200Leva;
                        promotionTill15December = 0.10 * totalPrice;
                        totalPrice -= promotionTill15December;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                    else
                    {
                        promotionTill15December = 0.10 * currentPrice;
                        totalPrice -= promotionTill15December;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                }

            }
            else if (dayOfDecember >= 16 && dayOfDecember <= 22)
            {
                switch (sweets)
                {
                    case "Cake":
                        currentPrice = 28.70 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Souffle":
                        currentPrice = 9.80 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Baklava":
                        currentPrice = 16.98 * countOfOrderedSweats;
                        price = true;
                        break;
                    default:
                        break;
                }
                if (price)
                {
                    if (currentPrice > 200)
                    {
                        promotionUnder200leva = 0.25 * currentPrice;
                        totalPrice = currentPrice - promotionUnder200leva;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                    else if (currentPrice <= 200 && currentPrice >= 100)
                    {
                        promotionBetwen100and200Leva = 0.15 * currentPrice;
                        totalPrice = currentPrice - promotionBetwen100and200Leva;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                    else
                    {
                        totalPrice += currentPrice;
                        Console.WriteLine($"{totalPrice:f2}");
                    }
                }
            }
            else if (dayOfDecember > 23 && dayOfDecember <= 24)
            {
                switch (sweets)
                {
                    case "Cake":
                        currentPrice = 28.70 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Souffle":
                        currentPrice = 9.80 * countOfOrderedSweats;
                        price = true;
                        break;

                    case "Baklava":
                        currentPrice = 16.98 * countOfOrderedSweats;
                        price = true;
                        break;
                    default:
                        break;
                }
                if (price)
                {
                    totalPrice += currentPrice;
                    Console.WriteLine($"{totalPrice:f2}");
                }
            }
            else
            {
                return;
            }

        }
    }
}