07. Trade Commissions

using System;

namespace Trade_Commissions
{
    class Program
    {
        static void Main(string[] args)
        {

            string City = Console.ReadLine().ToLower();
            double sales = double.Parse(Console.ReadLine());
            double comision = 0;

            if (City=="sofia")
            {
                if(sales>=0&&sales<=500)
                {
                    comision = sales * 5 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales >500 && sales <= 1000)
                {
                    comision = sales * 7 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 1000 && sales <= 10000)
                {
                    comision = sales * 8 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 10000)
                {
                    comision = sales * 12 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales < 0)
                {
                    Console.WriteLine("error");
                }

            }
            else if (City == "plovdiv")
            {
                if (sales >= 0 && sales <= 500)
                {
                    comision = sales * 5.5 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 500 && sales <= 1000)
                {
                    comision = sales * 8 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 1000 && sales <= 10000)
                {
                    comision = sales * 12 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 10000)
                {
                    comision = sales * 14.5 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales < 0)
                {
                    Console.WriteLine("error");
                }

            }
            else if (City == "varna")
            {
                if (sales >= 0 && sales <= 500)
                {
                    comision = sales * 4.5 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 500 && sales <= 1000)
                {
                    comision = sales * 7.5 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 1000 && sales <= 10000)
                {
                    comision = sales * 10 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales > 10000)
                {
                    comision = sales * 13 / 100;
                    Console.WriteLine($"{comision:f2}");
                }
                else if (sales<0)
                {
                    Console.WriteLine("error");
                }


            }
            else
            {
                Console.WriteLine("error");
            }


        }
    }
}