using System;

public class Test
{
	public static void Main()
	{
		Console.WriteLine("Please enter number of triangles of your tree: ");
		int n = int.Parse(Console.ReadLine());
		
		for (int i = 1; i <= n; i++)
		{
		    for (int j = 0; j < i; j++)
		    {
		        string branch = new String('*', j);
		        Console.WriteLine(branch.PadLeft(n + 3) + "*" + branch);
		    }
		}
	}
}