import java.io.PrintStream;
import java.util.Scanner;

public class TreeOfStars
{
    public static void main(String[] args) 
    {
	Scanner input = new Scanner(System.in);
	PrintStream output = System.out;
		
	output.print("Enter the height of the tree: ");
	int height = input.nextInt();
		
	for (int h = 0; h < height; h++) 
	{
	    for (int s = 0; s < height - 1 - h; s++) 
	    {
		output.print(" ");
	    }
	    for (int s = 0; s < 2 * h + 1; s++) 
	    {
		output.print("*");
	    }
	    output.println();
	}
		
	for (int s = 0; s < height - 1; s++) 
	{
	    output.print(" ");
	}
	output.print("*");
	output.println();
    }
}