import java.util.Scanner;
public class Flowers{
    public static void main(String[] args) {


    Scanner scanner=new Scanner(System.in);

        int Chrysanthemums = Integer.parseInt(scanner.nextLine());
        int Roses =  Integer.parseInt(scanner.nextLine());
        int Tulips =  Integer.parseInt(scanner.nextLine());
        String Season = scanner.nextLine();
        String Holiday = scanner.nextLine();
        int Flowers = Chrysanthemums + Roses + Tulips;
        double PriceChrys = 0;
        double PriceRoses = 0;
        double PriceTulips = 0;
        double DiscountOne = 0;
        double DiscountTwoo = 0;
        double DiscountTree = 0;
        double TotalChrys = 0;
        double TotalRoses = 0;
        double TotalTulips = 0;
        double PriceFlowers = 0;
        double TotalFlowers = 0;
        if (Season.equals("Spring")  || Season.equals("Summer"))
        {
            PriceChrys = 2.00;
            PriceRoses = 4.10;
            PriceTulips = 2.50;
        }
        else if (Season.equals("Autumn") ||Season.equals("Winter"))
        {
            PriceChrys = 3.75;
            PriceRoses = 4.50;
            PriceTulips = 4.15;
        }
        TotalChrys = Chrysanthemums * PriceChrys;
        TotalRoses = Roses * PriceRoses;
        TotalTulips = Tulips * PriceTulips;
        PriceFlowers = TotalChrys + TotalRoses + TotalTulips;
        if (Holiday.equals("Y"))
            PriceFlowers = PriceFlowers * 1.15;
        if (Tulips > 7 && Season.equals("Spring"))
            DiscountOne = 0.05 * PriceFlowers;
        PriceFlowers = PriceFlowers - DiscountOne;
        if (Roses >= 10 && Season.equals("Winter"))
            DiscountTwoo = 0.10 * PriceFlowers;
        PriceFlowers = PriceFlowers - DiscountTwoo;
        if (Flowers > 20)
            DiscountTree = 0.2 * PriceFlowers;
        PriceFlowers = PriceFlowers - DiscountTree;
        TotalFlowers = PriceFlowers + 2;
        System.out.printf("%.2f",TotalFlowers);
    }
}