Problems will be released every day at 12:00 UTC. For each day you answer, you get a star, and you earn score for each day based on how many people solved it before you did.

Brought to you by [CUCaTS], inspired by [Advent of Code]!

Past calendars stay open: you can still solve every problem from earlier years for practice. Each year's leaderboard is frozen on 1 January, so late solves don't earn points.

Please don't try and break anything :-)

If you have any questions/run into any issues, please contact us via the CUCaTS Discord Server.