Sun Glases (book)

import math
n = int(input())
print("*" * (2 * n), end="")
print(" " * n, end="")
print("*" * (2 * n))
for i in range(n - 2):
  print("*" + ("/" * (2 * n - 2)) + "*", end="")
  if i == (n - 1) // 2 - 1:
    print("|" * n, end="")
  else:
    print(" " * n, end="")
  print("*" + ("/" * (2 * n - 2)) + "*")
print("*" * (2 * n), end="")
print(" " * n, end="")
print("*" * (2 * n))