Coming soon

IOI 2022 will be hosted by Indonesia. Visit the official website to learn more.

Coming soon   IOI 2022 in Indonesia

JOI - Final round

The 21st Japanese Olympiad in Informatics (JOI) Final Round Online Contest will be held on 13 Feb (07:00-11:00 UTC/GMT).

The contest duration is 4 hours. There will be 5 problems, which are the same as the 21st JOI Final Round. Problem statements will be provided both in Japanese and English.

A link to the registration page will appear on this page about 30 minutes before the beginning of the contest.

Contest website:
Contest duration: 4 hours
The number of tasks: 5 tasks
Language: English, Japanese
Programming Language: C++ (C++17).
You cannot use C, Pascal nor Java.
Details will be announced on the contest website.

Date & Time:
Sunday, February 13, 2022
16:00 - 20:00 +0900 (JST)
07:00 - 11:00 (UTC/GMT)

Executive director of the Japanese Committee for the IOI
Seiichi Tani

Chairperson of the Scientific Committee of JCIOI
Tetsushi Ito

Need more info?


Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.


A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.


The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.