Oscars ceremony

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int hallRent = Integer.parseInt(scanner.nextLine());
        double statues = hallRent * 0.7,
                catering = statues * 0.85,
                soundSystem = catering / 2;

        System.out.printf("%.2f\n", hallRent + statues + catering + soundSystem);
    }
}