PKUanonym/REKCARC-TSC-UHT

Choose the upstream repo unless you specifically want a frozen historical snapshot; this fork does not add capabilities and is far behind on content.

Choose upstream unless you explicitly want an older, lightly edited snapshot. This fork offers little evidence of added value and is materially behind on content.

Prefer upstream unless you specifically need this 2019-era archival snapshot or its extra coursework/testcase assets. For most adopters, the fork is too stale and too far behind to be a better default.

Prefer upstream unless you specifically want an old frozen baseline or your own private fork to customize. For current students, the upstream repo is the better choice because it is actively maintained and much more complete.

Prefer upstream unless you specifically need the 2020 snapshot. This fork adds no visible capabilities and is too stale for normal student use.

Prefer upstream for any current course guidance, study materials, or contributions. Choose this fork only if you intentionally want an old frozen snapshot.

Prefer upstream unless you specifically want a frozen 2019 archive with legacy homework/test assets; this fork is not a good choice for current course guidance or ongoing maintenance.

Prefer upstream unless you specifically need this fork's archived assignment/testcase-heavy snapshot. This fork adds bulk course artifacts, but it is too stale and divergent to recommend as a current course guide.

Prefer upstream for any practical use; this fork is only sensible as an archival copy.