Cinema

import java.util.Scanner;
import java.util.StringTokenizer;

public class test2 {

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


        String type = scan.nextLine().toLowerCase();
        int r = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());

        int full=r*c;
        double income=1;

        switch (type){
            case "premiere":
                income=full*12;
                break;
            case  "normal":
                income=full*7.50;
                break;
            case "Discount":
                income=full*5;
                break;

        }
        System.out.printf("%.2f",income);

    }
}