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

namespace _04
{
    class Program
    {
        static void Main(string[] args)
        {
            var fruit = Console.ReadLine();
            var size = Console.ReadLine();
            var quantity = double.Parse(Console.ReadLine());
            var big = 5;
            var small = 2;

            var price = 0.0;

            switch (size)
            {
                case "small":
                    {
                        switch (fruit)
                        {
                            case "Watermelon": price = 56.00 * small; break;
                            case "Mango": price = 36.66 * small; break;
                            case "Pineapple": price = 42.10 * small; break;
                            case "Raspberry": price = 20.00 * small; break;

                        }
                        break;
                    }
                case "big":
                    {
                        switch (fruit)
                        {
                            case "Watermelon": price = 28.70 * big; break;
                            case "Mango": price = 19.60 * big; break;
                            case "Pineapple": price = 24.80 * big; break;
                            case "Raspberry": price = 15.20 * big; break;
                        }
                        break;
                    }
            }
            var totalPrice = price * quantity;

            if (totalPrice >= 400 && totalPrice <= 1000)
            {
                totalPrice = totalPrice * 0.85;
                Console.WriteLine($"{totalPrice:f2} lv.");
            }
            else if (totalPrice > 1000)
            {
                totalPrice = totalPrice * 0.50;
                Console.WriteLine($"{totalPrice:f2} lv.");
            }
            else
            {
                Console.WriteLine($"{totalPrice:f2} lv.");
            }
        }
    }
}