Terms of Service
Last updated November 7, 2026.
Using ocasu
ocasu is a free, non-commercial practice tool for USACO. Use it to practice. Don't try to break it, overload it, attack other users, or use the code runner for anything other than solving problems (for example mining, scanning networks or running malware). Accounts that do may be removed.
Content
Problems, statements and test data belong to USACO and link back to usaco.org. Topic tags and difficulty ratings come from the USACO Guide under CC BY-NC-SA 4.0, which is why ocasu is non-commercial. The code you write is yours.
No guarantees
The coach is an AI and can be wrong; the judge is the source of truth. ocasu is provided as is, without warranties, and may change or go offline. To the extent the law allows, ocasu is not liable for any loss from using it.
Privacy
See the Privacy Policy.
Contact
stewiedingleberry@gmail.com