07. Trade Commissions

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string city = Console.ReadLine();
            double number = double.Parse(Console.ReadLine());
            switch (city)
            {
                case "Sofia":
                    if (number >= 0 && number <= 500)
                    {
                        Console.WriteLine($"{number * 5 / 100:F2}");
                    }
                    else if (number > 500 && number <= 1000)
                    {
                        Console.WriteLine($"{number * 7 / 100:F2}");
                    }
                    else if (number > 1000 && number <= 10000)
                    {
                        Console.WriteLine($"{number * 8 / 100:F2}");
                    }
                    else if (number > 10000)
                    {
                        Console.WriteLine($"{number * 12 / 100:F2}");
                    }
                    else {
                        Console.WriteLine("error");
                    }
                    break;
                case "Varna":
                    if (number >= 0 && number <= 500)
                    {
                        Console.WriteLine($"{number * 4.5 / 100:F2}");
                    }
                    else if (number > 500 && number <= 1000)
                    {
                        Console.WriteLine($"{number * 7.5 / 100:F2}");
                    }
                    else if (number > 1000 && number <= 10000)
                    {
                        Console.WriteLine($"{number * 10 / 100:F2}");
                    }
                    else if (number > 10000)
                    {
                        Console.WriteLine($"{number * 13 / 100:F2}");
                    }
                    else
                    {
                        Console.WriteLine("error");
                    }
                    break;
                case "Plovdiv":
                    if (number >= 0 && number <= 500)
                    {
                        Console.WriteLine($"{number * 5.5 / 100:F2}");
                    }
                    else if (number > 500 && number <= 1000)
                    {
                        Console.WriteLine($"{number * 8 / 100:F2}");
                    }
                    else if (number > 1000 && number <= 10000)
                    {
                        Console.WriteLine($"{number * 12/ 100:F2}");
                    }
                    else if (number > 10000)
                    {
                        Console.WriteLine($"{number * 14.5 / 100:F2}");
                    }
                    else
                    {
                        Console.WriteLine("error");
                    }
                    break;
                default:
                    Console.WriteLine("error");
                    break;
            }
        }
    }
}