public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num1 = Integer.parseInt(in.next());
        double num2 = Integer.parseInt(in.next());
        if (num2 == 0) {
            System.out.println("Error: divide by zero!");
            System.exit(0);
        }
        System.out.println(num1 / num2);
    }