import java.util.Scanner;

public class Flowers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int countOfChrysanthemum = Integer.parseInt(scanner.nextLine());
        int countOfRoses = Integer.parseInt(scanner.nextLine());
        int countOfTulips = Integer.parseInt(scanner.nextLine());
        String season = scanner.nextLine();
        String day = scanner.nextLine();
        double priceAll = 0;

        switch (day) {
            case "Y":
                if ("Spring".equals(season) || "Summer".equals(season)) {
                    priceAll = countOfChrysanthemum * 2.00 + countOfRoses * 4.10 + countOfTulips * 2.50;
                    priceAll = priceAll + (priceAll * 0.15);
                    if (countOfTulips > 7) {
                        priceAll = priceAll - (priceAll * 0.05);
                    }

                } else if ("Winter".equals(season) || "Autumn".equals(season)) {
                    priceAll = countOfChrysanthemum * 3.75 + countOfRoses * 4.50 + countOfTulips * 4.15;
                    priceAll = priceAll + (priceAll * 0.15);
                    if (countOfRoses >= 10) {
                        priceAll = priceAll - (priceAll * 0.10);
                    }

                }
                break;
            case "N":
                if ("Spring".equals(season) || "Summer".equals(season)) {
                    priceAll = countOfChrysanthemum * 2.00 + countOfRoses * 4.10 + countOfTulips * 2.50;
                    if (countOfTulips > 7) {
                        priceAll = priceAll - (priceAll * 0.05);
                    }

                } else if ("Winter".equals(season) || "Autumn".equals(season)) {
                    priceAll = countOfChrysanthemum * 3.75 + countOfRoses * 4.50 + countOfTulips * 4.15;
                    if (countOfRoses >= 10) {
                        priceAll = priceAll - (priceAll * 0.10);
                    }
                }
                break;
        }
        if (countOfChrysanthemum + countOfRoses + countOfTulips > 20) {
            priceAll = (priceAll - (priceAll * 0.20)) + 2;
        } else {
            priceAll = priceAll + 2;
        }
        System.out.printf("%.2f", priceAll);
    }
}