USACO Guide

A free collection of curated, high-quality resources to take you from Bronze to Platinum and beyond.

Learn USACO. Efficiently.

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.

Curated Resources

Learn new topics from a vetted list of high-quality resources. If one resource doesn't click, look at another!

Extensive Problemsets

Practice each topic with extensive problemsets and solutions covering a wide range of difficulties.

Progress Tracking

Use our progress-tracking tools to track your progress in the Guide and stay motivated.

Help when you need it

Get help from other community members in the USACO Forum.View Forum →

Trusted by thousands

This guide is written by top USACO contestants, including two-time IOI winner and USACO Problemsetter Benjamin Qi.

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Frequently asked questions

What is the USACO?

USACO stands for the USA Computing Olympiad. Check out the USACO FAQ Page for more information.

Is this an official syllabus?

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.

How do I report a problem or ask a question?

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.

I'm looking for classes, club curriculum...

Check out the Competitive Programming Initiative!

Is this guide for non-USACO competitive programmers?

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!

How can I get help?

If you get stuck, head over to the USACO Forum for help.

How can I contribute?

To learn more about contributing, please visit this page. We appreciate any and all contributions!

Is this open source?

Yes! Check out our Github Repository.

Contributors

By the Community, for the Community.

Comprised of USACO Finalists and top USACO competitors, our team is committed to increasing participation in competitive programming.

  • Nathan Wang

    Nathan Wang

  • Darren Yao

    Darren Yao

  • Benjamin Qi

    Benjamin Qi

  • Michael Cao

    Michael Cao

  • Maggie Liu

    Maggie Liu

  • Melody Yu

    Melody Yu

  • Daniel Guan

    Daniel Guan

  • Bing-Dong Liu

    Bing-Dong Liu

  • Harry Wang

    Harry Wang

  • Varun Ragunath

    Varun Ragunath

  • Amy Chang

    Amy Chang

  • Evan Zhao

    Evan Zhao

  • Pranav Jadhav

    Pranav Jadhav

  • Andi Qu

    Andi Qu

  • Andrew Wang

    Andrew Wang

  • Nathan Chen

    Nathan Chen

  • Siyong Huang

    Siyong Huang

  • Kevin Sheng

    Kevin Sheng

  • Nikhil Chatterjee

    Nikhil Chatterjee

  • Ryan Chou

    Ryan Chou

  • Dustin Miao

    Dustin Miao

  • Jesse Choe

    Jesse Choe

  • Juheon Rhee

    Juheon Rhee

  • Aditya Gupta

    Aditya Gupta

  • Albert Jiang

    Albert Jiang

  • Chuyang Wang

    Chuyang Wang

  • Eric Xu

    Eric Xu

  • Frank Xiao

    Frank Xiao

  • Ian Zhang

    Ian Zhang

  • Jeffrey Zhang

    Jeffrey Zhang

  • John Tian

    John Tian

  • Paul Chen

    Paul Chen

  • Riley Bonner

    Riley Bonner

  • Stanley Zhao

    Stanley Zhao

  • Trisha Sabadra

    Trisha Sabadra

Former Team Members

  • Arpan Banerjee

    Arpan Banerjee

  • Jay Fu

    Jay Fu

  • Neo Wang

    Neo Wang

  • Albert Zhu

    Albert Zhu

  • Amogha Pokkulandra

    Amogha Pokkulandra

  • Atharv Jain

    Atharv Jain

  • David Li

    David Li

  • David Zhang

    David Zhang

  • Jeffrey Meng

    Jeffrey Meng

  • Nathan Gong

    Nathan Gong

  • Vikas Thoutam

    Vikas Thoutam

  • Adham Ibrahim

    Adham Ibrahim

  • Akshar Yeccherla

    Akshar Yeccherla

  • Alex Chen

    Alex Chen

  • Arnan Bawa

    Arnan Bawa

  • Arnav Adhikari

    Arnav Adhikari

  • Ben Dodge

    Ben Dodge

  • Jason Antwi-Appah

    Jason Antwi-Appah

  • Jonathan Paulson

    Jonathan Paulson

  • Mithil Srungarapu

    Mithil Srungarapu

  • Mrinall Umasudhan

    Mrinall Umasudhan

  • Oscar Rendón

    Oscar Rendón

  • Shikhar Ahuja

    Shikhar Ahuja

  • Sofia Yang

    Sofia Yang

  • Vidith Madhu

    Vidith Madhu

  • Vivian Han

    Vivian Han

  • Yifan Ma

    Yifan Ma

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