import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int hp = Integer.parseInt(scanner.nextLine());
        String city = scanner.nextLine();
        String ecoStandart = scanner.nextLine();
        double taxWithoutDiscount;
        double tax;

        if (ecoStandart.equals("Euro 4")) {
            if (city.equals("Sofia")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.43 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.50 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.68 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Vidin")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.34 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.54 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Varna")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.37 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.57 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (15 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            }
        } else if (ecoStandart.equals("Euro 5")) {
            if (city.equals("Sofia")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.43 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.50 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.68 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Vidin")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.34 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.54 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Varna")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.37 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.57 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (17 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            }
        } else if (ecoStandart.equals("Euro 6")) {
            if (city.equals("Sofia")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.43 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.50 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.68 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Vidin")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.34 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.54 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            } else if (city.equals("Varna")) {
                if (hp <= 37) {
                    taxWithoutDiscount = 1.37 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 37 && hp <= 55) {
                    taxWithoutDiscount = 1.40 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                } else if (hp > 55) {
                    taxWithoutDiscount = 2.57 * hp;
                    tax = taxWithoutDiscount - (taxWithoutDiscount * (20 / 100.0));
                    System.out.printf("%.2f lv", tax);
                }
            }
        }


    }
}