n=int(input())
m = n//2

def line(n,i):
  s = 2 * i -1
  e = int( (n - s) / 2 )
  line = e * " "+  s * "*" + e * " "
  print(line)


for i in range(1,m+2):
    line(n,i)
for i in range(m+2,n+1):
    line(n,n-i+1)