10. Ski Trip

import java.util.Scanner;

public class LiveDemo {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int daysCnt = Integer.parseInt(scanner.nextLine());
        String roomType = scanner.nextLine();
        String feedback = scanner.nextLine();

        int nightsCount = daysCnt - 1;

        double price = 0;

        switch (roomType) {
            case "room for one person":
                price = 18;
                break;
            case "apartment":
                price = 25;
                if (nightsCount < 10) {
                    price = price * 0.7;
                } else if (nightsCount < 15) {
                    price = price * 0.65;
                } else {
                    price = price * 0.5;
                }
                break;
            case "president apartment":
                price = 35;
                if (nightsCount < 10) {
                    price = price * 0.9;
                } else if (nightsCount < 15) {
                    price = price * 0.85;
                } else {
                    price = price * 0.8;
                }
                break;
        }

        double totalPrice = price * nightsCount;

        if (feedback.equals("positive")) {
            totalPrice = totalPrice * 1.25;
        } else {
            totalPrice = totalPrice * 0.9;
        }

        System.out.printf("%.2f", totalPrice);
    }
}