using System;

namespace _04._Sum_of_Two_Numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            double moshtnostNaDvigatelq = double.Parse(Console.ReadLine());
            string gradVBulgariq = Console.ReadLine();
            string ecoStandart = Console.ReadLine();
            double danukzakilovat = 0;
            double otstupka = 0;




            if (moshtnostNaDvigatelq <= 37)
            {
                switch (gradVBulgariq)
                {

                    case "Sofia":
                        {

                            danukzakilovat = moshtnostNaDvigatelq * 1.43;

                            break;
                        }
                    case "Vidin":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 1.34;
                            break;
                        }
                    case "Varna":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 1.37;
                            break;
                        }


                }
            }
            else if (moshtnostNaDvigatelq >= 38 && moshtnostNaDvigatelq <= 55)
            {
                switch (gradVBulgariq)
                {
                    case "Sofia":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 1.50;
                            break;
                        }
                    case "Vidin":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 1.40;
                            break;
                        }
                    case "Varna":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 1.40;
                            break;
                        }
                }
            }
            else if (moshtnostNaDvigatelq > 55)
            {
                switch (gradVBulgariq)
                {
                    case "Sofia":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 2.68;
                            break;
                        }
                    case "Vidin":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 2.54;
                            break;
                        }
                    case "Varna":
                        {
                            danukzakilovat = moshtnostNaDvigatelq * 2.57;
                            break;
                        }
                }
            }
            if (ecoStandart == "Euro 4")
            {
                otstupka = danukzakilovat * 0.15;
            }
            else if (ecoStandart == "Euro 5")
            {
                otstupka = danukzakilovat * 0.17;
            }
            else if (ecoStandart == "Euro 6")
            {
                otstupka = danukzakilovat * 0.2;
            }
            double total = danukzakilovat - otstupka;

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


        }


    }
}