public class MyClass {
    public static void main(String args[]) {
        java.util.Scanner scanner = new java.util.Scanner(System.in);
        double money = scanner.nextDouble();
        int students = scanner.nextInt();
        double pricePerLightsabre = scanner.nextDouble();
        double pricePerRobe = scanner.nextDouble();
        double pricePerBelt = scanner.nextDouble();

        double total = 0.0;

        total = (Math.ceil(1.1 * students) * pricePerLightsabre) + (students * pricePerRobe) + (students - Math.floor(students/6)) * pricePerBelt;

        if(total <= money) {
            System.out.printf("The money is enough - it would cost %.2flv.",total);
        } else {
            System.out.printf("George lucas would need %.2flv more.", total - money);
        }
    }
}