The 20th Japanese Olympiad in Informatics Final Round Online Contest

Overview

Japanese version is available here.

The 20th Japanese Olympiad in Informatics Final Round Online Contest is the online contest of The 20th Japanese Olympiad in Informatics Final Round. The contest is open to everybody. Everybody is welcome to attend JOI Open Contest!

The duration of the contest is 4 hours.

Registration will be open before the contest. A link to the registration page will appear on this page about 30 minutes 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. We will not publish the source code submitted to this contest without permission from the participants.

After the contest finishes, we will open the judging server for one week. Interested contestants can improve and resubmit their solutions by themselves.

Contest Information

Name: The 20th Japanese Olympiad in Informatics Online Contest
Contest System: CMS (customized version)
Contest duration: 4 hours
The number of tasks: 5 tasks
Language: English, Japanese
Date: Sunday, February 14, 2021; 17:00-21:00 +0900 (JST); 08:00-12:00 (UTC/GMT)

Rule

Rules that are same as JOI 2021 Rule:

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.
Each submitted source program must be written in C (C11) or C++ (C++17). Allowed extensions for source codes are:
- C: .c
- C++: .cpp
You cannot use Pascal nor Java.
You may need to write I/O code by yourself. Graders are not provided for all tasks.
Question form is available on a contest server, but no replies are guaranteed.

Contest Site

The contest is over.

Ranking

Ranking

Tasks and Test Data

Tasks and test data are available in JOI 2020/2021 本選問題・データ(Japanese). You can get tasks from 本選競技問題文・提案, test data from 本選競技サンプル入出力・採点用入力および対応する正解出力データ, sample codes from 本選競技サンプルソース (C++）.–>