Update on 12 Apr 2021:
Please read the latest IOI president announcement w.r.t. IOI 2021 at the COVID-19 updates page, the updated IOI 2021 competition rules (no Java), and the IOI 2021 (Online Competition) Schedule.
Update on 20 Apr 2021:
We have opened the IOI 2021 registration portal.
Update on 29 Apr 2021:
Please read the Contestant PC (VM) updates for IOI 2021 (no Java) and Contest Operations Manual (previously called the Minimal E-Proctoring Rules) draft in the rules page.
THE INTERNATIONAL OLYMPIAD IN INFORMATICS
The 32nd International Olympiad in Informatics (IOI 2020) was hosted by Singapore virtually from 13 to 19 September 2020. It is the most prestigious computer science competition for secondary school and high school students around the world. The competition is one of five international science Olympiads held annually.
The 33rd IOI 2021 will also be hosted virtually from 19 to 25 June 2021 by the National University of Singapore (NUS) School of Computing.