2021 US Open Contest

The USACO 2021 US Open contest, our national championship contest, has recently ended. Results are here.

Soon, finalists will be selected and invited to participate in the USACO summer training camp in late May, from which the IOI team is selected. The US Open usually carries high weight in this selection process.

We are excited to announce also that the USA has been invited to field a team at the 1st European Girls Olympiad in Informatics (EGOI), running from Jun 13-19 from Switzerland. If you identify as female and are in the gold or platinum divisions, please fill out this form by April 12 to let us know if you are interested in potentially participating (the form is necessary since we do not have gender information in our participant database). Top individuals from our 2020-2021 contests will be selected for the team, who will also be invited to our summer training camp to help prepare for the EGOI.

Final note: Due to complications with the ongoing global pandemic, the USACO summer training camp, IOI, and EGOI are being held on-line this year.

IOI 2020: 1st Place for Third Year in a Row!

Congratulations to Walden Yan (gold medal), Danny Mittal (silver medal), Xinyang (Alan) Chen (gold medal), and William Lin (gold medal, 1st place individual winner), who represented the USA at the 2020 International Olympiad in Informatics. This is the 3rd year in a row where the USA team has fielded the 1st place individual winner at the IOI.

Our Mission

The USACO supports computing education in the USA and worldwide by identifying, motivating, and training high-school computing students at all levels. We provide:

• Hundreds of hours of free on-line training resources that students can use to improve their programming and computational problem-solving skills.
• On-line programming contests (roughly six per year) for students at all levels.
• An intensive summer training camp, to which the top students in the USA are invited to further improve their skills and learn advanced material.
• The opportunity for the top four students in the USA to represent their country at the International Olympiad in Informatics (IOI), the most prestigious international algorithmic programming competition at the high-school level.

Finalists for 2019-2020 Season Announced

The USACO is pleased to announce its finalists for the 2019-2020 season.

First Place at IOI 2019!

Congratulations to the USA team attending the 2019 IOI in Baku, Azerbaijan. From left to right: Eric Zhang (gold), Benjamin Qi (gold, 1st place individual winner), Daniel Zhang (gold), and and William Lin (silver).

First Place at IOI 2018!

Congratulations to the USA IOI team for a superb showing at the 2018 International Olympiad in Informatics in Tsukuba, Japan! From left to right: Spencer Compton (gold), Eric Zhang (gold), Benjamin Qi (gold, 1st place individual winner), and William Hu (bronze).

Training Pages Now Support Python

For those who prefer coding in Python, our training pages now support submission of programs written in Python 2.7 or Python 3.6.

Your Account

2020-2021 Schedule

Dec 18-21: First Contest
Jan 22-25: Second Contest
Feb 26-Mar 1: Third Contest
Apr 2-5: US Open
TBD (Late May): Training Camp
Jun 20-27: IOI 2021 in Singapore