TradeCommissions

using System;

namespace _09.TradeCommissions
{
    class Program
    {
        static void Main(string[] args)
        {
            string town = Console.ReadLine();
            double number = double.Parse(Console.ReadLine());
            double discount = 0;


            if (town == "Sofia")
            {
                if (number > 0 && number <= 500)
                {
                    discount = number * 0.05;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 500 && number <= 1000)
                {
                    discount = number * 0.07;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 1000 && number <= 10000)
                {
                    discount = number * 0.08;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 10000)
                {
                    discount = number * 0.12;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number < 0)
                {
                    Console.WriteLine("error");
                }
            }
            else if (town == "Varna")
            {
                if (number > 0 && number <= 500)
                {
                    discount = number * 0.045;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 500 && number <= 1000)
                {
                    discount = number * 0.075;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 1000 && number <= 10000)
                {
                    discount = number * 0.1;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 10000)
                {
                    discount = number * 0.13;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number < 0)
                {
                    Console.WriteLine("error");
                }
            }
            else if (town == "Plovdiv")
            {
                if (number > 0 && number <= 500)
                {
                    discount = number * 0.055;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 500 && number <= 1000)
                {
                    discount = number * 0.08;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 1000 && number <= 10000)
                {
                    discount = number * 0.12;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number > 10000)
                {
                    discount = number * 0.145;
                    Console.WriteLine($"{discount:F2}");
                }
                else if (number < 0)
                {
                    Console.WriteLine("error");
                }
            }
            else
            {
                Console.WriteLine("error");
            }
        }
    }
}