02. Bike Race

using System;

namespace BakeRace
{
    class Program
    {
        static void Main(string[] args)
        {
            int junior = int.Parse(Console.ReadLine());
            int senior = int.Parse(Console.ReadLine());
            string trace = Console.ReadLine();
            double junSum = 0;
            double senSum = 0;
            double sum = 0;

            switch (trace)
            {
                case "trail":
                    junSum = 5.5;
                    senSum = 7;
                    break;

                case "cross-country":
                    junSum = 8;
                    senSum = 9.5;
                    break;

                case "downhill":
                    junSum = 12.25;
                    senSum = 13.75;
                    break;

                case "road":
                    junSum = 20;
                    senSum = 21.5;
                    break;
            }
            sum = junior * junSum + senior * senSum;

            if (trace == "cross-country" && junior + senior >= 50 )
            {
                sum = 0.75 * sum;
            }

            Console.WriteLine($"{0.95 * sum:F2}");
        }
    }
}