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A free collection of curated, high-quality resources
to take you from Bronze to Platinum and beyond.
Stop wasting time searching for problems and tutorials. The USACO Guide provides a comprehensive, organized roadmap carefully designed and crafted for USACO contestants – available to everyone, for free.
Resources | ||
---|---|---|
CF | EDU: DSU | video explanation + problems for DSU |
CSA | Disjoint Data Sets | both optimizations, diagrams |
PAPS | 11.1 - Disjoint Sets | both optimizations, no diagrams |
CPH | 15.2 - Union-Find | small to large, diagrams |
Learn new topics from a vetted list of high-quality resources. If one resource doesn't click, look at another!
Source | Problem Name | Difficulty |
---|---|---|
CSES | Road Construction | Easy |
USACO Gold | Closing the Farm | Easy |
USACO Gold | Mootube | Normal |
Baltic OI | 2016 - Park | Hard |
Practice each topic with extensive problemsets and solutions covering a wide range of difficulties.
Use our progress-tracking tools to track your progress in the Guide and stay motivated.
This guide is written by top USACO contestants, including two-time IOI winner and USACO Problemsetter Benjamin Qi.
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USACO stands for the USA Computing Olympiad. Check out the USACO FAQ Page for more information.
No, USACO does not have an official syllabus. This guide merely lists topics that have historically appeared in USACO contests; it makes no guarantees about the topics in future USACO contests.
If you encounter an issue while using the guide (website bug, typo, broken link, unclear explanation, etc), use the "Contact Us" button. Alternatively, email us at usacoguide@gmail.com.
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Of course! While we structure our content around USACO, feel free to use this guide even if you don't do USACO. You will still learn a lot from it!
If you get stuck, head over to the USACO Forum for help.
To learn more about contributing, please visit this page. We appreciate any and all contributions!
Yes! Check out our Github Repository.
Contributors
Comprised of USACO Finalists and top USACO competitors, our team is committed to increasing participation in competitive programming.
Nathan Wang
Darren Yao
Benjamin Qi
Michael Cao
Maggie Liu
Melody Yu
Daniel Guan
Bing-Dong Liu
Harry Wang
Varun Ragunath
Amy Chang
Evan Zhao
Andi Qu
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Ryan Chou
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David Li
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