SkiTrip

import java.util.Scanner;

public class SkiTrip {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Integer days = Integer.parseInt(scanner.nextLine());
        String typeRoom = scanner.nextLine();
        String estimation = scanner.nextLine();
        double totalPrice=0;

        switch (typeRoom){
            case "room for one person":
                totalPrice = (days-1)*18;
                switch (estimation){
                    case "positive":
                        totalPrice = totalPrice + totalPrice*0.25;
                        break;
                    case "negative":
                        totalPrice = totalPrice - totalPrice*0.10;
                        break;
                }

                break;
            case "apartment":
                if(days < 10){
                    double price = (days-1)*25.00;
                    totalPrice = price - price*0.30;
                }else if(days >= 10 && days <15){
                    double price = (days-1)*25.00;
                    totalPrice = price - price*0.35;
                }else if(days > 15){
                    double price = (days-1)*25;
                    totalPrice = price - price*0.50;
                }
                switch (estimation){
                    case "positive":
                        totalPrice = totalPrice + totalPrice*0.25;
                        break;
                    case "negative":
                        totalPrice = totalPrice - totalPrice*0.10;
                        break;
                }

                break;
            case "president apartment":
                if(days < 10){
                    double price = (days-1)*0.10;
                    totalPrice = price - price*0.30;
                }else if(days >= 10 && days <15){
                    double price = (days-1)*0.15;
                    totalPrice = price - price*0.35;
                }else if(days > 15){
                    double price = (days-1)*35.00;
                    totalPrice = price - price*0.20;
                }
                switch (estimation){
                    case "positive":
                        totalPrice = totalPrice + totalPrice*0.25;
                        break;
                    case "negative":
                        totalPrice = totalPrice - totalPrice*0.10;
                        break;
                }

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