num=int(input())
for i in range(num):
for j in range(i):
print(' ',end='')
for k in range(2*num-2*i-1):
print('*',end='')
print(' ')
for i in range(1,num):
for j in range(num-i-1):
print(' ',end='')
for k in range(2*i+1):
print('*',end='')
print(' ')
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