Hi @kaveh,
Welcome to AIcrowd community! 
I would, first of all, encourage you to submit your submission on the challenge page itself, so you can claim your position on the post-challenge leaderboard. 
We encourage participants to share their approaches but it still voluntarily done. You can view the methods and codebases for the overall Blitz winners here: Winners Solutions 🎉
(LNDST ranks -> 1, 3, 5, 7, 8)
I guess that should help you with your work.
Cheers,
Shivam