public static double summ(double n) {
        double result = 0;
        for (int i = 1; i <= (int)n; i++) {
            result = result + (1.0 / i);
        }
        return result;
    }
 
    public static void main(String[] args) {
        double n = 10.0;
        System.out.println(summ(Math.pow(n, 6)));
        System.out.println(summ(Math.pow(n, 8)));
    }