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

namespace SoftUniExamDekemwri2019_2._5
{
    class Program
    {
        static void Main(string[] args)
        {
            string fruit = Console.ReadLine();
            string size = Console.ReadLine();
            int orderedSets = int.Parse(Console.ReadLine());

            var total = 0.0;
            var priceOfNum = 0.0;
            var priceOfSets = 0.0;


            if (fruit == "Watermelon")
            {
                if (size == "small")
                {
                    priceOfNum = 56 * 2;
                    priceOfSets = orderedSets * priceOfNum;
                    if (priceOfSets >= 400 && priceOfSets <= 1000)
                    {
                        total = priceOfSets - (priceOfSets * 0.15);
                        Console.WriteLine("{0:f2} lv.", total);
                    }
                    else
                    {
                        if (priceOfSets > 1000)
                        {
                            total = priceOfSets - (priceOfSets * 0.5);
                            Console.WriteLine("{0:f2} lv.", total);
                        }
                        else
                        {
                            if (priceOfSets < 400)
                            {
                                total = orderedSets * priceOfNum;
                                Console.WriteLine("{0:f2} lv.", total);
                            }
                        }
                    }
                }
                else
                {
                    if (size == "big")
                    {
                        priceOfNum = 28.70 * 5;
                        priceOfSets = orderedSets * priceOfNum;
                        if (priceOfSets >= 400 && priceOfSets <= 1000)
                        {
                            total = priceOfSets - (priceOfSets * 0.15);
                            Console.WriteLine("{0:f2} lv.", total);
                        }
                        else
                        {
                            if (priceOfSets > 1000)
                            {
                                total = priceOfSets - (priceOfSets * 0.5);
                                Console.WriteLine("{0:f2} lv.", total);
                            }
                            else
                            {
                                if (priceOfSets < 400)
                                {
                                    total = orderedSets * priceOfNum;
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                            }
                        }
                    }
                }
            }
            else
            {
                if (fruit == "Mango")
                {
                    if (size == "small")
                    {
                        priceOfNum = 36.66 * 2;
                        priceOfSets = orderedSets * priceOfNum;
                        if (priceOfSets >= 400 && priceOfSets <= 1000)
                        {
                            total = priceOfSets - (priceOfSets * 0.15);
                            Console.WriteLine("{0:f2} lv.", total);
                        }
                        else
                        {
                            if (priceOfSets > 1000)
                            {
                                total = priceOfSets - (priceOfSets * 0.5);
                                Console.WriteLine("{0:f2} lv.", total);
                            }
                            else
                            {
                                if (priceOfSets < 400)
                                {
                                    total = orderedSets * priceOfNum;
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                            }
                        }
                    }
                    else
                    {
                        if (size == "big")
                        {
                            priceOfNum = 19.60 * 5;
                            priceOfSets = orderedSets * priceOfNum;
                            if (priceOfSets >= 400 && priceOfSets <= 1000)
                            {
                                total = priceOfSets - (priceOfSets * 0.15);
                                Console.WriteLine("{0:f2} lv.", total);
                            }
                            else
                            {
                                if (priceOfSets > 1000)
                                {
                                    total = priceOfSets - (priceOfSets * 0.5);
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                                else
                                {
                                    if (priceOfSets < 400)
                                    {
                                        total = orderedSets * priceOfNum;
                                        Console.WriteLine("{0:f2} lv.", total);
                                    }
                                }
                            }
                        }
                    }
                }
                else
                {
                    if (fruit == "Pineapple")
                    {
                        if (size == "small")
                        {
                            priceOfNum = 42.10 * 2;
                            priceOfSets = orderedSets * priceOfNum;
                            if (priceOfSets >= 400 && priceOfSets <= 1000)
                            {
                                total = priceOfSets - (priceOfSets * 0.5);
                                Console.WriteLine("{0:f2} lv.", total);
                            }
                            else
                            {
                                if (priceOfSets > 1000)
                                {
                                    total = priceOfSets - (priceOfSets * 0.5);
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                                else
                                {
                                    if (priceOfSets < 400)
                                    {
                                        total = orderedSets * priceOfNum;
                                        Console.WriteLine("{0:f2} lv.", total);
                                    }
                                }
                            }
                        }
                        else
                        {
                            if (size == "big")
                            {
                                priceOfNum = 24.80 * 5;
                                priceOfSets = orderedSets * priceOfNum;
                                if (priceOfSets >= 400 && priceOfSets <= 1000)
                                {
                                    total = priceOfSets - (priceOfSets * 0.5);
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                                else
                                {
                                    if (priceOfSets > 1000)
                                    {
                                        total = priceOfSets - (priceOfSets * 0.5);
                                        Console.WriteLine("{0:f2} lv.", total);
                                    }
                                    else
                                    {
                                        if (priceOfSets < 400)
                                        {
                                            total = orderedSets * priceOfNum;
                                            Console.WriteLine("{0:f2} lv.", total);
                                        }
                                    }
                                }
                            }
                        }
                    }
                    else
                    {
                        if (fruit == "Raspberry")
                        {
                            if (size == "small")
                            {
                                priceOfNum = 20 * 2;
                                priceOfSets = orderedSets * priceOfNum;
                                if (priceOfSets >= 400 && priceOfSets <= 1000)
                                {
                                    total = priceOfSets - (priceOfSets * 0.5);
                                    Console.WriteLine("{0:f2} lv.", total);
                                }
                                else
                                {
                                    if (priceOfSets > 1000)
                                    {
                                        total = priceOfSets - (priceOfSets * 0.5);
                                        Console.WriteLine("{0:f2} lv.", total);
                                    }
                                    else
                                    {
                                        if (priceOfSets < 400)
                                        {
                                            total = orderedSets * priceOfNum;
                                            Console.WriteLine("{0:f2} lv.", total);
                                        }
                                    }
                                }
                            }
                            else
                            {
                                if (size == "big")
                                {
                                    priceOfNum = 15.20 * 5;
                                    priceOfSets = orderedSets * priceOfNum;
                                    if (priceOfSets >= 400 && priceOfSets <= 1000)
                                    {
                                        total = priceOfSets - (priceOfSets * 0.5);
                                        Console.WriteLine("{0:f2} lv.", total);
                                    }
                                    else
                                    {
                                        if (priceOfSets > 1000)
                                        {
                                            total = priceOfSets - (priceOfSets * 0.5);
                                            Console.WriteLine("{0:f2} lv.", total);
                                        }
                                        else
                                        {
                                            if (priceOfSets < 400)
                                            {
                                                total = orderedSets * priceOfNum;
                                                Console.WriteLine("{0:f2} lv.", total);
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}