//writen by MOUELLEF Miloud. 30, March 2006.
//requires Java 5.
//This programme draws a losange withe "stars".
//mmouellef@hotmail.com

import java.util.Scanner;
class Losange
{
	public static void main(String[] args)
	{
	Scanner scan =  new Scanner(System.in);
	int Nline, count1 = 1, count2 = 1, count3 = 1;
	int count11 = 1, count22 = 1 , count33 = 1;
	System.out.println("Enter Nstars");
	Nline = scan.nextInt();
	int s =  Nline  + 4 ;
	int ss = 1;
		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;


		}

while( count11 <= Nline )
		{
				while(count22 <= s + 1)
				{

					System.out.print(" ");
					count22 += 1;

				}


					while( count33 <= ss-2)
					{
						System.out.print("*");
						count33 += 1;


					}

			System.out.println("");

				count11 += 1;

				count22 = 1;

				count33 = 1;
//s = s - 1;
//ss = ss + 2;
s = s + 1;
ss = ss - 2;


		}

	}

}