ski

using System;
using System.Linq.Expressions;

namespace gf
{
    class Program
    {
        static void Main(string[] args)
        {
            //Първи ред -дни за престой -цяло число в интервала[0...365]
            // Втори ред -вид помещение - " room for one person", " apartment & quot; или & quot; president apartment"
            // Трети ред -оценка - " positive & quot; или & quot; negative & quot;
            double day = double.Parse(Console.ReadLine());
            string type = Console.ReadLine();
            string evaluation = Console.ReadLine();

            double pricePerNight = 0;
            double discount = 0;

            if (type == "room for one person")
            {
                pricePerNight = 18;
            }
            else if (type =="apartment")
            {
                pricePerNight = 25;
                if (day<10)
                {
                    discount = 0.30;
                }
                else if (day >10 && day <15)
                {
                    discount = 0.35;
                }
                else if (day >15)
                {
                    discount = 0.50;
                }
            }
            else if (type == "president apartment")
            {
                pricePerNight = 35;
                if (day < 10)
                {
                    discount = 0.10;
                }
                else if (day > 10 && day < 15)
                {
                    discount = 0.15;
                }
                else if (day > 15)
                {
                    discount = 0.20;
                }
            }
            double totalPrice = pricePerNight * (day - 1);
            totalPrice -= totalPrice * discount;
            if (evaluation =="positive")
            {
                totalPrice += totalPrice * 0.25;
            }
            else if (evaluation=="negative")
            {
                totalPrice -= totalPrice * 0.10;
            }
            Console.WriteLine($"{totalPrice:f2}");


        }
    }
}