It’s been around 3 months for December Challenge and the editorials are not posted yet. Please upload them soon.
The unofficial tutorials of most problems can be found on the forum but yes they should have released the editorial.
Yes, its too long. But I would suggest that we see the unofficial ones, they are by no means any worse/bad than the official ones. In case unofficial ones don’t clarify your doubts, ping us/ask as doubt. We will try to best help you.
Please i request to all guys that do not post the same question again and again.