ChristmasTree

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine()); // Number of rows

        for (int i = 1; i <= n; i++) {
            // Print spaces
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }

            // Print asterisks
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print("*");
            }

            // Move to the next line
            System.out.println();
        }

        // Print the trunk
        for (int i = 1; i <= n - 1; i++) {
            System.out.print(" ");
        }
        System.out.println("*");
    }
}