import java.util.Scanner;

public class FuelTankPt2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String fuelType = scanner.nextLine();
        double fuelQuantity = Double.parseDouble(scanner.nextLine());
        boolean hasClubCard = scanner.nextLine().equals("Yes");

        double price = 0.0;

        if ("Gas".equals(fuelType)) {
            price = 0.93;
            if (hasClubCard) {
                price -= 0.08;
            }
        } else if ("Gasoline".equals(fuelType)) {
            price = 2.22;
            if (hasClubCard) {
                price -= 0.18;
            }
        } else if ("Diesel".equals(fuelType)) {
            price = 2.33;
            if (hasClubCard) {
                price -= 0.12;
            }
        }

        price *= fuelQuantity;

        if (fuelQuantity >= 20 && fuelQuantity <= 25) {
            price *= 0.92;
        } else if (fuelQuantity > 25) {
            price *= 0.9;
        }

        System.out.println(String.format("%.2f lv.", price));
    }
}