using System;

namespace TaxCalculator
{
    class Program
    {
        static void Main(string[] args)
        {
            int engine = int.Parse(Console.ReadLine());
            string town = Console.ReadLine();
            string euro = Console.ReadLine();
            double price = 0;

            if (engine <= 37)
            {
                switch (town)
                {
                    case "Sofia":
                        price = 1.43;
                        break;
                    case "Vidin":
                        price = 1.34;
                        break;
                    case "Varna":
                        price = 1.37;
                        break;
                    default:
                        break;
                }

            }
            else if (engine > 37 && engine <= 55)
            {
                switch (town)
                {
                    case "Sofia":
                        price = 1.50;
                        break;
                    case "Vidin":
                        price = 1.40;
                        break;
                    case "Varna":
                        price = 1.40;
                        break;
                    default:
                        break;
                }

            }
            else if (engine > 55)
            {
                switch (town)
                {
                    case "Sofia":
                        price = 2.68;
                        break;
                    case "Vidin":
                        price = 2.54;
                        break;
                    case "Varna":
                        price = 2.57;
                        break;
                    default:
                        break;
                }

            }
            double totalPrice = price * engine;

            if (euro == "Euro 4")
            {
                totalPrice *= 0.85;

            }
            else if (euro == "Euro 5")
            {
                totalPrice *= 0.83;

            }
            else if (euro == "Euro 6")
            {
                totalPrice *= 0.80;

            }

            Console.WriteLine($"{totalPrice:f2} lv");

        }
    }
}