JOI Open Contest 2024 is an IOI-like open competition for students at schools for secondary education. The main purpose of this contest is to give Japanese delegations and candidates of delegations an opportunity for training and practice. But the contest itself is open to everybody. Everybody is welcome to attend JOI Open Contest 2024!

This year, the contest will be held during June 16-17, 2024.
There will be 3 tasks.
Each submitted source program must be written in C++ (C++20).
Problem statements will be provided both in Japanese and English.

The duration of the contest is 5 hours. The contest server will be open during Sunday, June 16, 2024 04:00 - Monday, June 17, 2024 04:00 (UTC/GMT). Contestants can choose start time from above freely.

After the contest finishes, we will open the judging server for one week. 
Interested contestants can improve and resubmit their solutions by themselves.
After the contest finishes, we will fix the standings.
No prizes will be given to the contestants.

Contest website:
https://contests.ioi-jp.org/open-2024/index.html

Contest duration: 5 hours
The number of tasks: 3 tasks
Language: English, Japanese
Programming Language: C++ (C++20)
Details will be announced on the contest website.

Date & Time:
Sunday, June 16, 2024 13:00 - Monday, June 17, 2024 13:00 +0900 (JST)
Sunday, June 16, 2024 04:00 - Monday, June 17, 2024 04:00 (UTC/GMT)

Judging Server is open until
Sunday, August 23, 2024
13:00 +0900 (JST)
04:00 (UTC/GMT)

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Executive director of the Japanese Committee for the IOI
Seiichi Tani