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
-
2020 USACO Gold December Contest Problems
Official problem statements for this contest (PDF): Problem 1. Replication — PDF Problem 2. Bovine Genetics — PDF Problem 3. Square Pasture — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2020 USACO Bronze December Contest Problems
Official problem statements for this contest (PDF): Problem 1. Do You Know Your ABCs_ — PDF Problem 2. Daisy Chains — PDF Problem 3. Stuck in a Rut — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Silver US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Maze Tac Toe — PDF Problem 2. Do You Know Your ABCs_ — PDF Problem 3. Acowdemia — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Platinum US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. United Cows of Farmer John — PDF Problem 2. Routing Schemes — PDF Problem 3. Balanced Subsets — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Gold US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. United Cows of Farmer John — PDF Problem 2. Portals — PDF Problem 3. Permutation — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Bronze US Open Contest Problems
Official problem statements for this contest (PDF): Problem 1. Acowdemia I — PDF Problem 2. Acowdemia II — PDF Problem 3. Acowdemia III — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Silver January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Dance Mooves — PDF Problem 2. No Time to Paint — PDF Problem 3. Spaced Out — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Platinum January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Sum of Distances — PDF Problem 2. Minimum Cost Paths — PDF Problem 3. Paint by Letters — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Gold January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Uddered but not Herd — PDF Problem 2. Telephone — PDF Problem 3. Dance Mooves — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.
-
2021 USACO Bronze January Contest Problems
Official problem statements for this contest (PDF): Problem 1. Uddered but not Herd — PDF Problem 2. Even More Odd Photos — PDF Problem 3. Just Stalling — PDF New here? See how to practise with past contests, or browse the full official archive on usaco.org.