2017_19_March_E_Truck Driver

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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


            switch (season)
            {
                case "Summer":
                   // Console.WriteLine("Summer");
                    if (rangeMonth>10000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth*1.45)*4)*0.9);
                    }
                    if ((rangeMonth > 5000)&&(rangeMonth<=10000))
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.1)*4)*0.9);
                    }
                    if (rangeMonth<=5000)
                    {
                        Console.WriteLine( "{0:f2}",((rangeMonth * 0.90)*4)*0.90);
                    }

                    break;
                case ("Spring"):
                   // Console.WriteLine("Spring");
                    if (rangeMonth > 10000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.45)*4) * 0.9);
                    }
                    if ((rangeMonth > 5000) && (rangeMonth <= 10000))
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 0.95)*4) * 0.9);
                    }
                    if (rangeMonth <= 5000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 0.75) * 4) * 0.90);
                    }
                    break;
                case "Winter":
                   // Console.WriteLine("Winter");
                    if (rangeMonth > 10000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.45)*4) * 0.9);
                    }
                    if ((rangeMonth > 5000) && (rangeMonth <= 10000))
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.25)*4) * 0.9);
                    }
                    if (rangeMonth <= 5000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.05) * 4) * 0.90);
                    }
                    break;
                case "Autumn":
                    //Console.WriteLine("Autumn");
                    if (rangeMonth > 10000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 1.45)*4) * 0.9);
                    }
                    if ((rangeMonth > 5000) && (rangeMonth <= 10000))
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 0.95)*4) * 0.9);
                    }
                    if (rangeMonth <= 5000)
                    {
                        Console.WriteLine("{0:f2}", ((rangeMonth * 0.75) * 4) * 0.90);
                    }
                    break;
            }
        }
    }
}