import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
 
	public static void print(int n){
		if(n<3 || n%2==0){
				System.out.println("enter a valid value");
				return;
		}
 
		for(int i=0;i<n;i++){
 
			for(int j=0;j<n/2;j++){
					System.out.print(" ");
			}
			for(int k=0;k<2;k++){
					System.out.print("*");
			}
				System.out.println();
		}
 
		for(int i=0;i<n+1;i++){
				System.out.print("*");
		}
	}
 
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner (System.in);
		int n=sc.nextInt();
		print(n);
	}
}