HKOI Online Judge 2025/26 Renewal
The current subscriptions will expire on 2025-09-30. We are now accepting renewal and new subscriptions.
If you are interested in the subscription, please visit the Online Judge page for more information and guides.
Hong Kong Olympiad in Informatics (HKOI) is an annual software programming competition for secondary students. We also provide ICT teaching and learning resources to promote computational thinking and STEM education.