using System;

namespace TaxCalculator
{
    class Program
    {
        static void Main(string[] args)
        {
            int hoursePower = int.Parse(Console.ReadLine());
            string city = Console.ReadLine();
            string ecoStandart = Console.ReadLine();
            double price = 0;
            double pricePercent = 0;
            if (city == "Sofia")
            {
                if (hoursePower >= 37)
                {
                    price = 1.43;
                }

                else if(hoursePower >= 38 || hoursePower <= 55)
                {
                    price = 1.50;
                }
                else if (hoursePower > 55)
                {
                    price = 2.68;
                }
            }
            else if (city == "Vidin")
            {
                if (hoursePower >= 37)
                {
                    price = 1.34;
                }

                else if (hoursePower >= 38 || hoursePower <= 55)
                {
                    price = 1.40;
                }
                else if (hoursePower > 55)
                {
                    price = 2.54;
                }
            }
           else  if (city == "Varna")
            {
                if (hoursePower >= 37)
                {
                    price = 1.37;
                }

                else if (hoursePower >= 38 || hoursePower <= 55)
                {
                    price = 1.40;
                }
                else if (hoursePower > 55)
                {
                    price = 2.57;
                }

            }
            double totalPrice = hoursePower * price;
            if (ecoStandart == "Euro 4")
            {
                pricePercent -= 0.15;
            }
            else if (ecoStandart == "Euro 5")
            {
                pricePercent -= 0.17;
            }
            else if (ecoStandart == "Euro 6")
            {
                pricePercent -= 0.20;
            }
            double totalPriceWithPercent = totalPrice - pricePercent;

            Console.WriteLine($"{totalPriceWithPercent:F2} lv");









        }
    }
}