JOI Open Contest 2023
This is an IOI-like open competition for students at schools for secondary education. The main purpose of this contest is to give an opportunity to Japanese delegations and candidates of delegations for training and practice. But the contest itself is open to everybody. Everybody is welcome to attend JOI Open Contest 2023!
The duration of the contest is 5 hours. You can choose start time from specified range freely. After the duration finishes, we will open the judging server for one week. Interested contestants can improve and resubmit their solutions by themselves.
Registration will be open before the contest. A link to the registration page will appear on this page before the beginning of the contest. Contestants can register on the contest site by themselves from the right before the beginning of the contest until the end of it.
No prizes will be given to the contestants.
The ranking will be public during and after the contest. It includes your username provided via the registration form.
Contest Information
- Name
- JOI Open Contest 2023
- Contest System
- CMS
- Contest duration
- 5 hours
- The number of tasks
- 3 tasks
- Language
- English, Japanese
- Date and Time
- Saturday, August 5, 2023 13:00 - Sunday, August 6, 2023 13:00 +0900 (JST)
- Saturday, August 5, 2023 04:00 - Sunday, August 6, 2023 04:00 (UTC/GMT)
- You can choose start time from above freely and the duration is 5 hours.
- However, if you start competing after 08:00 (JST), competition ends at 13:00 (JST) and the duration is less than 5 hours.
Rule
Rules that are same as IOI 2017 Rule:
- There are no release tokens.
- All submissions will receive full feedback.
- Contestants may submit at most once per task per minute.
- Contestants may submit at most 50 times per task.
Rules that are not same as IOI 2017 Rule:
- Each submitted source program must be written in C++ (C++17).
Allowed extensions for source codes are:
- C++: .cpp
- You cannot use Pascal nor Java.
- You may need to write I/O code by yourself. Graders are not necessarily provided for all tasks.
- There are no testing environments. To test a solution you can simply make a full submission.
- Question form is available on a contest server, but no replies are guaranteed.
Contest Site
Ranking
Statements
Reviews
Sample Sources
Test Data
Questionnaire
We appreciate your feedback on our contest! Please answer the questionnaire after the contest.
Contact
joiopen at googlegroups.com
License
The tasks for JOI Open Contest 2023 by JCIOI (the Japanese Committee for the IOI) is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. If you need a license other than a Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0), please ask JCIOI.