As a tropical cyclone is approaching Hong Kong. We urge all participants to familiarize themselves with the updated Inclement Weather Arrangement.
Suspension of AM schools: Junior Group (CSP-J1) is cancelled or postponed to another day.
Suspension of PM schools: Senior Group (CSP-S1) is cancelled or postponed to another day.
Should the competition be disrupted due to the weather, our proposed make-up date is 27th September 2025 (Saturday), pending discussion with and approval from the China Computing Federation. Please monitor our website frequently for latest updates.
Hong Kong Secondary Schools Software Development Invitational Contest (SDIC) 2025 Heat Event will be held on 20th September, 2025 (Saturday).
The application deadline is 3rd September, 2025 (Wednesday).
The Hong Kong Olympiad in Informatics Training Team is pleased to announce that the team has achieved marvelous results in various external competitions this year. (See details)
| IOI 2025 |
Sucre, Bolivia |
27 July – 3 August 2025 |
2 Silver, 2 Bronze |
| NOI 2025 |
Shaoxing, Zhejiang |
12-18 July 2025 |
1 Silver, 5 Bronze |
| EGOI 2025 |
Bonn, Germany |
14-20 July 2025 |
2 Bronze,
1 Honourable Mention |
| APIO 2025 |
Uzbekistan |
17 May 2025 |
4 Silver, 2 Bronze |
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.
