SkiTrip

import java.util.Scanner;

public class SkiTrip {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int daysInBansko = Integer.parseInt(scan.nextLine());
        String roomType = scan.nextLine();
        String mark = scan.nextLine();

        int nights = daysInBansko - 1;
        double priceOfVacation = 0;
        switch (roomType) {
            case "room for one person":
                priceOfVacation = nights * 18;
                break;
            case "apartment":
                priceOfVacation = nights * 25;
                if (nights < 10) {
                    priceOfVacation = priceOfVacation * 0.7;
                } else if (nights >= 10 && nights <= 15) {
                    priceOfVacation = priceOfVacation * 0.65;
                } else if (nights > 15) {
                    priceOfVacation = priceOfVacation * 0.5;
                }
                break;
            case "president apartment":
                priceOfVacation = nights * 35;
                if (nights < 10) {
                    priceOfVacation = priceOfVacation * 0.9;
                } else if (nights > 10 && nights <= 15) {
                    priceOfVacation = priceOfVacation * 0.85;
                } else if (nights > 15) {
                    priceOfVacation = priceOfVacation * 0.80;
                    break;
                }

                if (mark.equals("positive")) {
                    priceOfVacation = priceOfVacation + 0.25 * priceOfVacation;
                } else {
                    priceOfVacation = priceOfVacation * 0.9;
                }
                    System.out.printf("%.2f", priceOfVacation);

        }
    }
}