Participating in Contest Materials

Contest materials are competitive assignments distributed as a type of learning material. They are organized within the hierarchy of Subject → Class → Material and feature divisions (sessions), leaderboards, and performance records.

Instructions for Examinees

1. Open the contest material within the class. The contest screen (registration, problem list, leaderboard) will be displayed.
2. Click the Join button for the division you wish to participate in. If a password is set, enter it.
3. Once the contest period begins, you can proceed to the problem list via the View Problems button.
4. Solve and submit each problem. Submissions are only reflected in the ranking if made during the division's contest period.
5. You can check your rank, score, and the correctness status of each problem on the Leaderboard.

Meaning of Displayed Content

• Score: The total points awarded for correctly solved problems.
• Rank: Determined by the highest score; in the event of a tie, the participant with the shorter elapsed time to reach their final correct answer is ranked higher.
• The leaderboard is visible only to administrators and participants before the contest ends, and is published after the contest ends according to the settings.

For Administrators (Creating a Contest)

• Contest materials are defined in *.contest.yaml files within the learning material repository, just like regular materials (they cannot be created or edited via the screen).
• In addition to settings such as available languages, the definition file describes divisions (contest periods, passwords) and the problems to be referenced (point values).
• Administrative rights for a contest are held by the administrators of the subject or organization to which it belongs, or by administrators specifically set for each contest material.
• Administrators for each contest material are specified by listing their email addresses in the adminEmails array within *.contest.yaml.

  name: 10th SangiHackChallenge
  adminEmails:
    - organizer1@example.com
    - organizer2@example.com
  divisions:
    - id: main
      name: Main Round
      openedAt: '2026-06-17T15:45:00+09:00'
      closedAt: '2026-06-24T09:00:00+09:00'
  problems:
    - id: sangi10p_01_rectangle
      score: 100
  

• Only email addresses of accounts already registered in Exercode can be specified in adminEmails. Unregistered email addresses will be skipped during import.
• Email addresses have leading/trailing whitespace removed and are matched case-insensitively. Specifying the same email address multiple times will be treated as a single administrator.
• Upon re-import, the contents of adminEmails become the master record. Even if someone was a previous administrator, users not included in the current adminEmails will be removed as administrators for that contest material.

Migration from Legacy Contests

• Legacy contests are automatically migrated to contest materials under a single class in the public subject "Contests" (ID: contests) using a migration script (since all legacy contests were public, and participation was determined by division passwords).
• Legacy contest administrators are migrated as administrators for each respective contest material.
• Before migration, performance data (rankings, scores) and the list of administrators are backed up to CSV.