Make MOSS run on all submissions #2442
Description
MOSS has a directory mode -d. Using this, we can make MOSS pretend all submissions by 1 user belong to 1 "program".
This will allow us to run MOSS on all submissions made in a contest, instead of just the highest scoring one, while also preventing false positives when a user changes a few lines and resubmits.
To use directory mode, we need to pass directory=True to the MOSS object constructor.
We then need to give all submissions by a user a virtual filepath {username}/{submission id}.
As a bonus, it would be nice if we could tune the sensitivity (-m) depending on the difficulty of the problem, but this is outside the scope of the current issue.