TradeCommission

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string town = Console.ReadLine();
            var sales = double.Parse(Console.ReadLine());
            var comission = -1.0;
            if (town == "Sofia")
            {
                if (0 <= sales && sales <= 500)
                {
                    Console.WriteLine(sales * 0.05);
                }
                else if (500 < sales && sales <= 1000)
                {
                    Console.WriteLine(sales * 0.07);
                }
                else if (1000 < sales &&sales <= 10000)
                {
                    Console.WriteLine(sales * 0.08);
                }
                else if (sales > 10000)
                {
                    Console.WriteLine(sales * 0.12);
                }
            }
            if (town == "Varna")
            {
                if (0 <= sales && sales <= 500)
                {
                    Console.WriteLine(sales * 0.045);
                }
                else if (500 < sales && sales <= 1000)
                {
                    Console.WriteLine(sales * 0.075);
                }
                else if (1000 < sales && sales <= 10000)
                {
                    Console.WriteLine(sales * 0.10);
                }
                else if (sales > 10000)
                {
                    Console.WriteLine(sales * 0.13);
                }
            }
            if (town == "Plovdiv")
            {
                if (0 <= sales && sales <= 500)
                {
                    Console.WriteLine(sales * 0.055);
                }
                else if (500 < sales && sales <= 1000)
                {
                    Console.WriteLine(sales * 0.08);
                }
                else if (1000 < sales && sales <= 10000)
                {
                    Console.WriteLine(sales * 0.12);
                }
                else if (sales > 10000)
                {
                    Console.WriteLine(sales * 0.145);
                }
            }
            if (comission >= 0)
            {
                Console.WriteLine("{0:f2}", sales * comission);
            }
            else
            {
                Console.WriteLine("error");
            }
        }
    }
}