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Advent of Code
An annual calendar of programming puzzles, with past years still open to solve
Toolora score96Free
Free; optional donations a…
AtCoder
Weekly programming contests from beginner to expert, with a public rating you can climb
Toolora score92Free
Free to compete; optional …
| Spec | Advent of Code | AtCoder |
|---|---|---|
| Category | Education & Learning | Education & Learning |
| Pricing | Free; optional donations and merch | Free to compete; optional account |
| Toolora score | 96/100 | 92/100 |
| Best for | puzzles, programming, calendar, practice | competitive-programming, contests, algorithms, practice |
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