Dear student,
You should have received three random repos from your colleagues. You can choose to build your homework on top of one of those repos, but you have to provide us a review of those three repos, clearly indicating why you choose a specific repo to build your code and what are the advantages and disadvantages of each of the repo.
You may submit your review to Moodle homework submission page. Submitting a review is necessary, so we do not consider you copying others' code. Be in mind that coping code without permission is plagiarism and would receive severe penalties according to EPFL rules.
Best,
Haoqian
