Important Notice: In order to register for the Team Formation Test and APIO, students must attend at least 1 regular training session to become an official Training Team member.

The Asia-Pacific Informatics Olympiad (APIO) is an IOI-like competition. It is a online contest in which students from the region compete in their respective contest sites. This is a good opportunity to practice your programming skills and compete with contestants in the Asia Pacific region. This year, the competition is hosted by Russia.

Official website of APIO 2019

Please visit this page frequently for rule updates.


Date: 18th May 2019 (Saturday)
Time: 14:00 to 19:00 (5 hours)
Venue: Room 924, Ho Sin-Hang Engineering Building, The Chinese University of Hong Kong

* Please arrive at 13:30 to test the machines and the programming environment.
* Contestants who are late for more than 30 minutes will be disqualified.
* Early leave is not allowed.
* Refreshments will be provided during the test.

Competition Details and Eligibility

Criteria for participating in APIO
  • An individual medal winner in HKOI 2018/19.
  • Has an HKOI Online Judge account with the role “HKOI Trainee (2019)” at the time of registration.
  • A full-time Hong Kong secondary school student at all times between 1st Sept 2018 and 1st June 2019.
  • Born on or after 1st July 1999
  • A holder of Hong Kong Permanent Identity Card
National Olympiad in Informatics (NOI)
Date TBC
Location Guangzhou, Guangdong
Additional Criteria
  • Born on or after 1st July 2000
  • Able to read simplified Chinese


Eligible students may register through the judge’s Contests page on or before 8th May 2019 (Wed). Walk-ins and observers are NOT ALLOWED.


Please refer to Team Formation Test 2019.

Selection Algorithm

The APIO-NOI ranking will only include the students who are eligible and commit to attend NOI.
In case of ties, their TFT raw ranking will be used as the tie-breaker.

Step 1: 1 NOI member

The top student in the APIO-NOI ranking will be selected.

Step 2: Determining the NOI members’ classes

All 6 NOI members will be ordered by their TFT-NOI ranking. The top female student will be a ‘Class A’ member. The top 4 remaining students will be ‘Class A’ members. The last student will be ‘Class B’.

Required Commitment and Results Announcement

The training team will submit the results, student profiles, attendance records and comments from the trainers to the Hong Kong Association for Computer Education for review and approval. Potential delegates (including backup members) will be requested to sign a Commitment Agreement and Parent’s Consent which must be returned to the Organizing Committee within 7 days in order to be considered further. Withdrawal will not be permitted under any circumstances once the document has been signed.

Potential delegates will be notified of the final selection results. The HKOI Organizing Committee’s decision shall be final.

All selected NOI members are required to attend the ACM-ICPC Hong Kong International Invitational Contest, the Training Camp, and additional team training sessions in July.