lisas_workbook.py

# source: https://www.hackerrank.com/challenges/lisa-workbook/problem
# video: https://youtu.be/G2_o-FqdCTs

def workbook(n, k, arr):
    count = 0

    current_page = 1 # NOTE: we're indexing starting at 1
    for question_count in arr: # O(n)
        pages_added, remaining_questions = divmod(question_count, k)
        for new_chapter_page in range(1, pages_added + 1): # O(pmodk) => O(100mod1) => O(100) => O(1)
            first_question_on_page = (new_chapter_page - 1) * k + 1
            last_question_on_page = first_question_on_page + (k - 1)
            # check for "special"  question => page index will be within question range
            count += first_question_on_page <= current_page <= last_question_on_page
            current_page += 1
        # handle remainder questions
        if remaining_questions: # will add another page
            first_question_on_page = pages_added * k + 1
            last_question_on_page = first_question_on_page + (remaining_questions - 1)
            # check for "special"  question => page index will be within question range
            count += first_question_on_page <= current_page <= last_question_on_page
            current_page += 1

    return count # Total Time Complexity: O(n) * O(pmodk) => O(n)

Hii sir , it does not give the output

Hii sir , it does not give the output

Hmm, I just tried it now and it's still working on my end.

Did you select "Python 3" for the language? Perhaps something wasn't copied over completely?