package prelim_lab5;
import java.util.*;

public class Prelim_Lab5 {


    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        System.out.print("Enter N: ");
        int index = input.nextInt();

        double num = 1.0;
        double sum = 0;
        double n = 0;
        double num2;

        while(n < index){

          n++;
          num2 = num / n;
          sum += num2;

        }
         System.out.print("Sum is: " + sum);
    }
}