Trade_Commissions

using System;

namespace Trade_Commissions
{
    class Program
    {
        static void Main(string[] args)
        {
            string city = Console.ReadLine();
            double sales = double.Parse(Console.ReadLine());

            double percent = 0;

            if (sales >= 0 && sales <= 500)
            {
                switch (city)
                {
                    case "Sofia":
                        percent = 0.05;
                        break;
                    case "Varna":
                        percent = 0.045;
                        break;
                    case "Plovdiv":
                        percent = 0.055;
                        break;
                    default:
                        Console.WriteLine("error");
                        return;
                }
            }
            else if (sales > 500 && sales <= 1000)
            {
                switch (city)
                {
                    case "Sofia":
                        percent = 0.07;
                        break;
                    case "Varna":
                        percent = 0.075;
                        break;
                    case "Plovdiv":
                        percent = 0.08;
                        break;
                    default:
                        Console.WriteLine("error");
                        return;

                }
            }

            else if (sales > 1000 && sales <= 10000)
            {
                switch (city)
                {

                    case "Sofia":
                        percent = 0.08;
                        break;
                    case "Varna":
                        percent = 0.1;
                        break;
                    case "Plovdiv":
                        percent = 0.12;
                        break;
                    default:
                        Console.WriteLine("error");
                        return;

                }
            }
            else if (sales > 10000)
            {
                switch (city)
                {

                    case "Sofia":
                        percent = 0.12;
                        break;
                    case "Varna":
                        percent = 0.13;
                        break;
                    case "Plovdiv":
                        percent = 0.145;
                        break;
                    default:
                        Console.WriteLine("error");
                        return;
                }
            }
            else
            {
                Console.WriteLine("error");
                return;
            }
            Console.WriteLine($"{sales * percent:F2}");

        }

    }

}