b = int(input("input:"))
print('*' * b + '*' * (b - 1)
for z in range(b):
  for a in range(N + (b - 1)):
        if (z == a) or (z + a == b + (b - 2)):
            print("*", end = "")
        else :print(end = " ")
        print()
for i in range(b - 1):
        print(' ' * (b - (i + 2)) + '*' + ' ' + ' ' * (b - (b - i)) + ' ' * i + '*')
        print('*' * b + '*' * (b - 1))