using System;

namespace Ski_Trip
{
    class Program
    {
        static void Main(string[] args)
        {
            int day = int.Parse(Console.ReadLine());
            string type = Console.ReadLine();
            string result = Console.ReadLine();
            day = day - 1;
            double sum = 0;
            if (day<10)
            {
                if (type== "room for one person")
                {
                    sum = day * 18.00;
                }
                else if (type== "apartment")
                {
                    sum = day * 25.00;
                    sum = sum - sum * 0.30;
                }
                else if (type== "president apartment")
                {
                    sum = day * 35.00;
                    sum = sum - sum * 0.10;
                }
                if (result == "positive")
                {
                    sum = sum + sum * 0.25;
                }
                else if (result == "negative")
                {
                    sum = sum - sum * 0.10;
                }
                Console.WriteLine($"{sum:f2}");

            }
            else if (day <= 10&&day>=15)
            {
                if (type == "room for one person")
                {
                    sum = day * 18.00;
                }
                else if (type == "apartment")
                {
                    sum = day * 25.00;
                    sum = sum - sum * 0.35;
                }
                else if (type == "president apartment")
                {
                    sum = day * 35.00;
                    sum = sum - sum * 0.15;
                }
                if (result == "positive")
                {
                    sum = sum + sum * 0.25;
                }
                else if (result == "negative")
                {
                    sum = sum - sum * 0.10;
                }
                Console.WriteLine($"{sum:f2}");

            }
            else if (day > 15)
            {
                if (type == "room for one person")
                {
                    sum = day * 18.00;

                }
                else if (type == "apartment")
                {
                    sum = day * 25.00;
                    sum = sum - sum * 0.50;
                }
                else if (type == "president apartment")
                {
                    sum = day * 35.00;
                    sum = sum - sum * 0.20;
                }

                if (result == "positive")
                {
                    sum = sum + sum * 0.25;
                }
                else if (result == "negative")
                {
                    sum = sum - sum * 0.10;
                }
                Console.WriteLine($"{sum:f2}");
            }



        }
    }
}