NEWS.FEED // USACO GUIDE
Contest news.
Clear context.
Updates, explainers and preparation notes for the USA Computing Olympiad — organized for students and families who want the important signal without the noise.
Latest dispatches
-
USACO Training Programs: Curriculum, Courses and Coaching
Computer science is one of the most sought-after fields in university admissions, and algorithmic programming competitions have become a common way for students to build and demonstrate their skills. USACO, the USA Computing Olympiad, is one such competition: it is open to students around the world for online practice and contests, it selects the top…
-
USACO 2025–26 Contest 1 Analysis: Bronze, Silver, Gold
The first contest of the 2025–26 USACO season (January 9–12, 2026) has concluded, and attention now turns to Contest 2. What topics appeared, and how hard was this round? This article breaks down the Bronze, Silver, and Gold divisions. Hanlin Computer Science instructors Mr. Wei and Mr. Luo put together a post-contest analysis of the…
-
USACO 2025-26 Contest 2: Bronze, Silver & Gold Analysis
Contest 2 of the 2025–26 USACO season has wrapped up. Another online round is complete, and students who cleared their division’s promotion cutoff move up for the contests ahead. The full set of problems, solutions, and video walkthroughs is now available. Hanlin Computer Science instructors Mr. Luo, Mr. Wei, and Mr. Jiang put together a…
-
USACO 2026 Round 3: Bronze, Silver & Gold Problem Analysis
The third contest of the 2025-26 USACO season (February 20-23, 2026) has now finished, and the full results of the second contest are available as well. In the second contest, Hanlin students earned promotions into the Silver, Gold, and Platinum divisions. More results are still being confirmed. For Round 3, Hanlin instructors Jiang and Wei…
-
2020 USACO Silver US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Social Distancing — PDF Problem 2. Cereal — PDF Problem 3. The Moo Particle — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Platinum US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Sprinklers 2- Return of the Alfalfa — PDF Problem 2. Exercise — PDF Problem 3. Circus — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Gold US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Haircut — PDF Problem 2. Favorite Colors — PDF Problem 3. Exercise — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Bronze US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Social Distancing I — PDF Problem 2. Social Distancing II — PDF Problem 3. Cowntact Tracing — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Silver January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Berry Picking — PDF Problem 2. Loan Repayment — PDF Problem 3. Wormhole Sort — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Platinum January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Cave Paintings — PDF Problem 2. Non-Decreasing Subsequences — PDF Problem 3. Falling Portals — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.