# your code goes here
import sys
x=input('enter a number\n')
for i in range(-1,x):
k=x-i+1
for m in range(k):
sys.stdout.write(' ')
for j in range(2*i+1,0,-1):
sys.stdout.write('*')
print
for i in range(x-1,-1,-1):
k=x-i+1
for m in range(k):
sys.stdout.write(' ')
for j in range(2*i+1,0,-1):
sys.stdout.write('*')
print
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCmltcG9ydCBzeXMKeD1pbnB1dCgnZW50ZXIgYSBudW1iZXJcbicpCmZvciBpIGluIHJhbmdlKC0xLHgpOgoJaz14LWkrMQoJZm9yIG0gaW4gcmFuZ2Uoayk6CgkJc3lzLnN0ZG91dC53cml0ZSgnICcpCglmb3IgaiBpbiByYW5nZSgyKmkrMSwwLC0xKToKCQlzeXMuc3Rkb3V0LndyaXRlKCcqJykKCXByaW50CmZvciBpIGluIHJhbmdlKHgtMSwtMSwtMSk6CglrPXgtaSsxCglmb3IgbSBpbiByYW5nZShrKToKCQlzeXMuc3Rkb3V0LndyaXRlKCcgJykKCWZvciBqIGluIHJhbmdlKDIqaSsxLDAsLTEpOgoJCXN5cy5zdGRvdXQud3JpdGUoJyonKQoJcHJpbnQ=