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

namespace FlowerShop
{
    class Program
    {
        static void Main(string[] args)
        {
            //vhodni danni
            var hrizantemi = int.Parse(Console.ReadLine());
            var rozi = int.Parse(Console.ReadLine());
            var laleta = int.Parse(Console.ReadLine());
            string season = Console.ReadLine().ToLower();
            var isHoliday = Console.ReadLine().ToLower();
            //promenlivi
            double priceHrizSeason=0.00;
            double priceRoziSeason = 0.00;
            double priceLaleSeason = 0.00;
            double holidayPriceHriz = priceHrizSeason + priceHrizSeason * 0.15;
            double holidayPriceRozi = priceRoziSeason + priceRoziSeason * 0.15;
            double holidayPriceLale = priceLaleSeason + priceLaleSeason * 0.15;
            int buntFlower = hrizantemi + rozi + laleta;
            double buntFlowerPrice;
            double PriceWithDiscoun;
            double HolidayPrice;
           //LYATO PROLET
            if (season=="summer" || season == "spring")
            {
                priceHrizSeason = 2.00;
                priceRoziSeason = 4.10;
                priceLaleSeason = 2.50;
                buntFlowerPrice = hrizantemi * priceHrizSeason + laleta * priceLaleSeason + rozi * priceRoziSeason;
                HolidayPrice = buntFlowerPrice + buntFlowerPrice*0.15;
                if (isHoliday == "y")
                {
                    if (laleta > 7 && buntFlower < 20)
                    {
                        PriceWithDiscoun = HolidayPrice- HolidayPrice * 0.05 + 2;
                        Console.WriteLine($"{PriceWithDiscoun:f2}");
                    }
                    else if (buntFlower > 20)
                    {
                        PriceWithDiscoun = HolidayPrice - HolidayPrice * 0.2;
                        Console.WriteLine($"{PriceWithDiscoun:f2}");
                    }
                    else
                    {
                       Console.WriteLine(HolidayPrice);
                    }

                }

                else if (isHoliday == "n")
                {
                    Console.WriteLine(buntFlowerPrice);
                }



                else
                {
                    buntFlowerPrice = (hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi) + 2;
                   Console.WriteLine($"{buntFlowerPrice:f2}");
                }

            }
            //ZIMA _ESEN
            if (season == "autumn" || season == "winter")
            {
                priceHrizSeason = 3.75;
                priceRoziSeason = 4.50;
                priceLaleSeason = 4.10;
                holidayPriceHriz = priceHrizSeason + priceHrizSeason * 0.15;
                holidayPriceRozi = priceRoziSeason + priceRoziSeason * 0.15;
                holidayPriceLale = priceLaleSeason + priceLaleSeason * 0.15;

                if (isHoliday == "y")
                {
                    buntFlowerPrice = hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi;
                    PriceWithDiscoun = buntFlowerPrice + 2;

                    if (rozi > 10 && buntFlower < 20)
                    {
                        buntFlowerPrice = hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi;
                        PriceWithDiscoun = buntFlowerPrice - buntFlowerPrice * 0.10 + 2;
                        Console.WriteLine($"{PriceWithDiscoun:f2}");
                    }
                    else if (buntFlower > 20)
                    {
                        buntFlowerPrice = (hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi) + 2;
                        PriceWithDiscoun = buntFlowerPrice - buntFlowerPrice * 0.2;
                        Console.WriteLine($"{PriceWithDiscoun:f2}");
                    }
                    else
                    {
                        buntFlowerPrice = (hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi) + 2;
                        Console.WriteLine($"{buntFlowerPrice:f2}");
                    }

                }

                else if (isHoliday == "n")
                {
                    if (rozi > 10 && buntFlower < 20)
                    {
                        buntFlowerPrice = hrizantemi * holidayPriceHriz + laleta * holidayPriceLale + rozi * holidayPriceRozi;
                        PriceWithDiscoun = buntFlowerPrice - buntFlowerPrice * 0.10 + 2;
                        Console.WriteLine($"{PriceWithDiscoun:f2}");
                    }
                    buntFlowerPrice = (hrizantemi * priceHrizSeason + laleta * priceLaleSeason + rozi * priceRoziSeason) + 2;
                }




            }

            }

            //switch (season)
            //{
            //    case "Summer" || "Spring" :


            //        break;
            //}

         }
    }