[백준] 2446

import sys
n=int(sys.stdin.readline())
for i in range(n):
    for j in range(i): print(" ",end='')
    for j in range(2*(n-i)-1): print("*",end='')
    print("")
for i in range(1,n):
    for j in range(n-i-1): print(" ",end='')
    for j in range(2*(i+1)-1): print("*",end='')
    if i!=n-1:print("")