import java.util.Scanner;

public class HelloWorld {

	    public static void main(String[] args) throws Exception {

	    	Scanner sc = new Scanner(System.in);
	    	int k = sc.nextInt();
	    	sc.close();

	    	double sum = 0;
	    	for (double n = 1; ; n = n + 1 ) {
	    		if (n * (n + k) > 1000000) {
	    			break;
	    		}
	    		System.out.println(sum);
	    		sum += 1.0 / n / (n + k);
	    	}

	    	System.out.println(sum);
	    	}

	    }