using System;

namespace ConsoleApp5
{
    class Program
    {
        static void Main(string[] args)
        {
            string fruit = Console.ReadLine();
            string sizeOfSet = Console.ReadLine();
            double numberOfSets = double.Parse(Console.ReadLine());

            double smallPrice = 0;
            double bigPrice = 0;
            double PackPrice = 0;

            switch (fruit)
            {
                case "Watermelon":
                    if (sizeOfSet == "small")
                    {
                        smallPrice = 56;
                        PackPrice = (numberOfSets * 2) * smallPrice;
                    }
                    else if (sizeOfSet == "big")
                    {
                        bigPrice = 28.70;
                        PackPrice = (numberOfSets * 5) * bigPrice;
                    }
                    break;
                case "Mango":
                    if (sizeOfSet == "small")
                    {
                        smallPrice = 36.66;
                        PackPrice = (numberOfSets * 2) * smallPrice;
                    }
                    else if (sizeOfSet == "big")
                    {
                        bigPrice = 19.60;
                        PackPrice = (numberOfSets * 5) * bigPrice;
                    }
                    break;
                case "Pineapple":
                    if (sizeOfSet == "small")
                    {
                        smallPrice = 42.10;
                        PackPrice = (numberOfSets * 2) * smallPrice;
                    }
                    else if (sizeOfSet == "big")
                    {
                        bigPrice = 24.80;
                        PackPrice = (numberOfSets * 5) * bigPrice;
                    }
                    break;
                case "Raspberry":
                    if (sizeOfSet == "small")
                    {
                        smallPrice = 20;
                        PackPrice = (numberOfSets * 2) * smallPrice;
                    }
                    else if (sizeOfSet == "big")
                    {
                        bigPrice = 15.20;
                        PackPrice = (numberOfSets * 5) * bigPrice;
                    }
                    break;
            }
            if (PackPrice >= 400 && PackPrice <= 1000)
            {
                PackPrice = PackPrice - (0.15 * PackPrice);
            }
            else if (PackPrice > 1000)
            {
                PackPrice = PackPrice - (0.50 * PackPrice);
            }
            Console.WriteLine($"{PackPrice:F2} lv.");

        }
    }
}