[Announcement] Followup on HW2 announcement.

[goodtaeeun]

There were some missing test cases in the Gradescope autograder.
For those of you who have already submitted your implementations, please check the updated score on the leaderboard.

FYI, we also check for the stderr output. Thus, remove any debug message you print to stderr before you submit your work.

[goodtaeeun]

Some more are added, thus total count is 98.