Senior Group: The invitations for the actual competition have been sent on 22nd January.
Junior Group: We will send the invitations progressively on 22nd and 23rd January.

Please visit this page frequently for rule updates.

Date: Senior Group: 23rd January, 2021 (Saturday)
Junior Group: 24th January, 2021 (Sunday)
Reporting Time: 1:00 p.m. – 1:15 p.m.
Event Time: 2:00 p.m. – 4:30 p.m.
Format: Online with invigilation


All qualified students who wish to participate in the Final Event must register between 12:00 7th January and 23:59 13th January 2021. Students who do not register by the deadline shall forfeit their eligibility. There are no consequences if the student does not attend the competition after registration.

Qualified students should log into HKOI Online Judge using their existing account / the finalist practice account provided to them through their schools. Information about the accounts, titled “[Join HKOI] Hong Kong Olympiad in Informatics 2020/21″, have been emailed to the contact persons listed in the HKOI Nomination Form on 8th December 2020.

Enter HKOI Online Judge Contests page

Finalists can choose to compete online or withdraw from the competition at their discretion. Schools and teachers should respect their decisions on whether to compete in the online Final Event.