import sys

def diamond(x):
	i = 1
	while i < x + 1:
		string = (" " * (x - i) + "* " * i).rstrip()
		print(string)
		i = i + 1
	i = i - 2
	while i > 0:
		string = (" " * (x - i) + "* " * i).rstrip()
		print(string)
		i = i - 1

def main():
	x = int(sys.argv[1])
	diamond(x)

if __name__ == '__main__':
	main()