import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = Integer.parseInt(input.nextLine());

        for (int stars = 1; stars <= n; stars++) {
            for (int j = 0; j < n - stars; j++) {
                System.out.print(" ");
            }
            for (int i = 1; i <= stars ; i++) {
                System.out.print("* ");
            }
            System.out.println();
        }

        for (int stars = n - 1; stars >= 1; stars--) {
            for (int j = 0; j < n - stars; j++) {
                System.out.print(" ");
            }
            for (int i = 0; i < stars ; i++) {
                System.out.print("* ");
            }
            System.out.println();
        }

    }

}