SkiTrip

using System;

class Program
{
    static void Main(string[] args)
    {
        int daysToStay = int.Parse(Console.ReadLine());
        string roomType = Console.ReadLine().ToLower();
        string feedBack = Console.ReadLine().ToLower();

        double positiveFeedBackPercentageToAdd = 25;
        double negativeFeedBackPercentageDiscount = 10;
        double nightsToPay = daysToStay - 1;
        double discountForNight = 0;

        double onePersonRoomPrice = 18;
        double apartmentPrice = 25.00;
        double presidentApartmentPrice = 35.00;

        double totalCost = 0;

        switch (roomType)
        {
            case "room for one person":
                {
                    if (feedBack == "positive")
                    {

                        totalCost = nightsToPay * onePersonRoomPrice * (1 + (1.00*positiveFeedBackPercentageToAdd/100));
                        Console.WriteLine($"{totalCost:F2}");
                    }
                    else
                    {
                        totalCost = nightsToPay * onePersonRoomPrice * (1.00 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                        Console.WriteLine($"{totalCost:F2}");
                    }
                }
                break;
            case "apartment":
                {
                    switch (feedBack)
                    {
                        case "positive":
                            if (daysToStay >= 0 && daysToStay < 10)
                            {
                                discountForNight = 30;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00*positiveFeedBackPercentageToAdd/100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            else if (daysToStay >= 10 && daysToStay <= 15)
                            {
                                discountForNight = 35;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00 * positiveFeedBackPercentageToAdd / 100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            else if (daysToStay > 15)
                            {
                                discountForNight = 50;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00 * positiveFeedBackPercentageToAdd / 100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            break;
                        case "negative":
                            if (daysToStay >= 0 && daysToStay < 10)
                            {
                                discountForNight = 30;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1-(1.00 * negativeFeedBackPercentageDiscount / 100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            else if (daysToStay >= 10 && daysToStay <= 15)
                            {
                                discountForNight = 35;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            else if (daysToStay > 15)
                            {
                                discountForNight = 50;
                                totalCost = (nightsToPay * apartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                                Console.WriteLine($"{totalCost:F2}");
                            }
                            break;
                    }

                }
                break;
            case "president apartment":
                switch (feedBack)
                {
                    case "positive":
                        if (daysToStay >= 0 && daysToStay < 10)
                        {
                            discountForNight = 30;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00 * positiveFeedBackPercentageToAdd / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        else if (daysToStay >= 10 && daysToStay <= 15)
                        {
                            discountForNight = 35;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00 * positiveFeedBackPercentageToAdd / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        else if (daysToStay > 15)
                        {
                            discountForNight = 50;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 + (1.00 * positiveFeedBackPercentageToAdd / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        break;
                    case "negative":
                        if (daysToStay >= 0 && daysToStay < 10)
                        {
                            discountForNight = 10;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        else if (daysToStay >= 10 && daysToStay <= 15)
                        {
                            discountForNight = 15;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        else if (daysToStay > 15)
                        {
                            discountForNight = 20;
                            totalCost = (nightsToPay * presidentApartmentPrice * (1.00 - (1.00 * discountForNight / 100))) * (1 - (1.00 * negativeFeedBackPercentageDiscount / 100));
                            Console.WriteLine($"{totalCost:F2}");
                        }
                        break;

                }
                break;
        }
    }
}