Ski Trip

using System;

namespace skivacation
{
    class Program
    {
        static void Main(string[] args)
        {
            int stay = int.Parse(Console.ReadLine());
            string roomType = Console.ReadLine();
            string opinion = Console.ReadLine();
            double price = 0;
            int night = stay - 1;
            if (roomType == "singleRoom")
            {
                if (stay < 10)
                {
                    price = night * 18;
                }
                else if (stay >= 10 && stay <= 15)
                {
                    price = night * 18;
                }
                else if (stay > 15)
                {
                    price = night * 18;

                }
            }
            else if (roomType == "apartment")
            {
                if (stay < 10)
                {
                    price = night * 25;
                    price = price - price * 0.30;
                }
                else if (stay >= 10 && stay <= 15)
                {
                    price = night * 25;
                    price = price - price * 0.35;
                }
                else if (stay > 15)
                {
                    price = night * 25;
                    price = price - price * 0.50;
                }
            }
            else if (roomType == "president apartment")
            {
                if (stay < 10)
                {
                    price = night * 35;
                    price = price - price * 0.10;
                }
                else if (stay >= 10 && stay <= 15)
                {
                    price = night * 35;
                    price = price - price * 0.15;
                }
                else if (stay > 15)
                {
                    price = night * 35;
                    price = price - price * 0.20;
                }
            }
            if (opinion=="positive")
            {
                price=price+price*0.25;
                Console.WriteLine($"{price:f2}");
            }
            else
            {
                Console.WriteLine($"{price - price * 0.10:F2}");
            }
        }
    }
}