from itertools import permutations, combinations

def amountOfBooksWhere(fun):
  return len([bookOrder for bookOrder in permutations('jjjjccc') if fun(''.join(bookOrder))])

# a)
def no_restriction(books):
  return True

# b)
def alternating_books(books):
  return all(books.find(l+l) == -1 for l in set(books))

# c)
def all_cs_are_together(books):
  return not books.find('ccc') == -1

# d)
def all_cs_js_are_together(books):
  return not (books.find('ccc') == -1 or books.find('jjjj') == -1)

print(amountOfBooksWhere(no_restriction))
print(amountOfBooksWhere(alternating_books))
print(amountOfBooksWhere(all_cs_are_together))
print(amountOfBooksWhere(all_cs_js_are_together))