09. Ski Trip(with ternary operator)

using System;

namespace SkiTrip
{
    class Program
    {
        static void Main()
        {
            int night = int.Parse(Console.ReadLine()) - 1;
            string room = Console.ReadLine();
            string rating = Console.ReadLine();
            double price = night;

            _ = room == "room for one person" ? price *= 18
               : room == "apartment" ? price *= 25 : price *= 35;

            _ = room == "apartment" && night < 10 ? price *= 0.7
                : room == "apartment" && night >= 15 ? price /= 2
                : room == "apartment" ? price *= 0.65 : price;

            _ = room == "president apartment" && night < 10 ? price *= 0.9
                : room == "president apartment" && night >= 15 ? price *= 0.8
                : room == "president apartment" ? price *= 0.85 : price;

            _ = rating == "positive" ? price *= 1.25 : price *= 0.9;

            Console.WriteLine($"{price:f2}");
        }
    }
}