06. Truck Driver

using System;

namespace TruckDriver
{
    class Program
    {
        static void Main(string[] args)
        {
            string season = Console.ReadLine();
            double km = double.Parse(Console.ReadLine());

            double sum = 0;

            if (km > 0 && km <= 5000)
            {
                switch (season)
                {
                    case "Spring":
                    case "Autumn":
                        sum = 0.75;
                        break;
                    case "Summer":
                        sum = 0.9;
                        break;
                    case "Winter":
                        sum = 1.05;
                        break;
                }
            }
            else if (km > 5000 && km <= 10000)
            {
                switch (season)
                {
                    case "Spring":
                    case "Autumn":
                        sum = 0.95;
                        break;
                    case "Summer":
                        sum = 1.1;
                        break;
                    case "Winter":
                        sum = 1.25;
                        break;
                }
            }
            else if (km > 10000 && km <= 20000)
            {
                sum = 1.45;
            }

            Console.WriteLine($"{sum * km * 4 * 0.9:F2}");
        }
    }
}