Common
Advent of Code
Annual computer programming event
Advent of Code
Advent of Code is an annual set of Christmas-themed computer programming challenges that follow the story of the North Pole elves making necessary preparations for smooth festivity operations, unraveled day by day akin to how an Advent calendar is opened. It has been running since 2015. Advent of Code's programming puzzles cover a variety of skill sets and skill levels and can be solved using any programming language, requiring solution answer upload instead of solution source code upload. Up to and including 2024, participants were also able to compete based on speed of correct solution hand-in on public leaderboards. From 2025 and onwards, only private leaderboards are supported, with publicizing one's private leaderboard too broadly being discouraged.
Open boosters, collect cards and trade them. Free to play.
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