a = int(input("Input N = "))
n = a + (a - 1)
print("output")
print("*" * n)
for line in range(n - 2):
   print("", end = ' ')
ins = 0
while ins < (n - 2):
  if ins == line: print("*", end = '')
  elif ins == (n - 3) - line: print("*", end = '')
  else :print(" ", end = '')
  ins += 1
  print(" ")
  print("*" * n)