public class HarmonicSum {

    public static double hSum(int n) {
        double sum = 0;
        for (int i=1; i<=n; i++) {
            sum = sum + 1.0/i;
        }
        return sum;
    }

    public static void main(String[] args) {
        int n = Integer.parseInt(args[0]);
        System.out.print("Summan med " + n + " termer ");
        System.out.println("blir " + hSum(n));
    }
}