//writen by MOUELLEF_Miloud; March, 30, 2006
//requires Java 5

import java.util.Scanner;
class Triangle22
{
	public static void main(String[] args)
	{
	Scanner scan =  new Scanner(System.in);
	int Nline, count1 = 1, count2 = 1, count3 = 1;
	System.out.println("Enter Nstars");
	Nline = scan.nextInt();
	int s = 1 ;
	int ss = Nline   + 4;
		while( count1 <= Nline)
		{
				while(count2 <= s)
				{

					System.out.print(" ");
					count2 += 1;

				}


					while( count3 <= ss )
					{
						System.out.print("*");
						count3 += 1;


					}

			System.out.println("");

				count1 += 1;

				count2 = 1;

				count3 = 1;
//s = s - 1;
//ss = ss + 2;
s = s + 1;
ss = ss - 2;


		}



	}

}