05. Birthday Party

import java.util.Scanner;

public class P05BirthdayParty {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int priceRentalHall = Integer.parseInt(scanner.nextLine());

        double priceCake = priceRentalHall * 0.20;
        double priceDrinks = priceCake - (priceCake * 0.45);
        double priceAnimator = priceRentalHall / 3.0;

        double sum = priceRentalHall + priceCake + priceDrinks + priceAnimator;

        System.out.printf("%.1f", sum);
    }
}