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

namespace Problem_03.Flowers4
{
    class Program
    {
        static void Main(string[] args)

        {
            double hrizantemi = double.Parse(Console.ReadLine());
            double rozi = double.Parse(Console.ReadLine());
            double laleta = double.Parse(Console.ReadLine());
            string season = Console.ReadLine();
            string PraznikIliNe = Console.ReadLine();

            double hrizantemiProletLqto = 2.00;
            double hrizantemiEsenZima = 3.75;
            double roziProletLqto = 4.10;
            double roziEsenZima = 4.50;
            double laletaProletLqto = 2.50;
            double laletaEsenZima = 4.15;

            double price = 0;
            double priceProletLqto = hrizantemiProletLqto * hrizantemi + roziProletLqto * rozi +
                laletaProletLqto * laleta;
            double priceEsenZima = hrizantemiEsenZima * hrizantemi + roziEsenZima * rozi +
                laletaEsenZima * laleta;
            double allFlowers = hrizantemi + rozi + laleta;


            if (season == "Summer" || season == "Spring")
            {
                price = priceProletLqto;
                if (PraznikIliNe == "Y")
                {
                    price += price * 0.15;
                }

                if (laleta > 7 && season == "Spring")
                {
                    price -= price * 0.05;
                }

            }


            //
            else if (season == "Autumn" || season == "Winter")
            {
                price = priceEsenZima;
                if (PraznikIliNe == "Y")
                {
                    price += price * 0.15;
                }

                if (rozi >= 10 && season == "Winter")
                {
                    price -= price * 0.10;

                }
            }

            if (allFlowers >= 20)
            {
                price -= price * 0.20;
                Console.WriteLine($"{price + 2:f2}");
            }
            else
            {
                Console.WriteLine($"{price + 2:f2}");
            }

        }
    }
}