Is there any centralized place for seeing other people's solutions? I'd like to be able to learn from how others approach the problem, and what more elegant or performant solutions exist than the one I came up with.
Usually each day there is a mega thread with people sharing their solutions
Sadly not the various help or complaint threads, or the mad lads playing up the ante, but…
The the success criteria is whatever you want it to be.
* Learn a new language
* Practice a language you already know
* Try to solve things in a small number of lines
* Try to solve things where the solutions run as fast as possible
* ... any number of other personal goals
* Try to make the leaderboard
That's probably closer to #10, as it requires being available right as the problem drops (midnight EST and 6AM in europe, IIRC), and generally mid-cycle puzzles require being very good at solving these kinds of puzzles.
Last year, betaveros topped the leaderboards with a bespoke language they designed for the task (https://github.com/betaveros/noulith).