package ivan;

import java.util.Scanner;

public class _03_Megapixels {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        int countFotos = Integer.parseInt(console.nextLine());
        String type = console.nextLine();
        String typeOfOrder = console.nextLine();

        double onePeicePrize = 0;
        double countDiscount = 1;


        switch (type) {
            case "9X13":
                onePeicePrize = 0.16;
                if (countFotos >= 50) {
                    countDiscount = 0.95;
                }
                break;
            case "10X15":
                onePeicePrize = 0.16;
                if (countFotos >= 80) {
                    countDiscount = 0.97;
                }
                break;
            case "13X18":
                onePeicePrize = 0.38;
                if (countFotos >= 50 && countFotos <= 100) {
                    countDiscount = 0.97;
                } else if (countFotos > 100) {
                    countDiscount = 0.95;
                }
                break;
            case "20X30":
                onePeicePrize = 2.90;
                if (countFotos >= 10 && countFotos <= 50) {
                    countDiscount = 0.93;
                } else if (countFotos > 50) {
                    countDiscount = 0.91;
                }
                break;
        }
        double sum = countFotos * onePeicePrize * countDiscount;

        if (typeOfOrder.equals("online")) {
            sum *= 0.98;
        }
        System.out.printf("%.2fBGN", sum);
    }
}