#!/bin/python
import sys
def writeCross(size):
	for x in range(-size,size):
		for y in range(-size,size):
			if abs(y)==abs(x) and x!=-size and y!=-size:
				sys.stdout.write('*')
			else:
				sys.stdout.write(' ')
		sys.stdout.write('\n')

writeCross(int(sys.argv[1]))