Participating in Contest Materials

Contest materials are competition-style assignments delivered as a type of learning material. They are placed within the Subject → Course → Material hierarchy and have divisions (sessions), a leaderboard, and results.

Steps for Participants

1. Open the contest material within a course. The contest screen (registration, problem list, leaderboard) will be displayed.
2. Press the Join button for the division you want 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 each problem and submit your solution. Submissions are only reflected in the standings 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 Information

• Score: The total points of the problems you solved correctly.
• Rank: Determined by highest score first; in case of a tie, by the shortest elapsed time until the last correct answer.
• Before the contest ends, the leaderboard is visible only to administrators and participants; after it ends, it is made public according to the settings.

For Administrators (Creating Contests)

• Contest materials are defined, like regular materials, by a *.contest.yaml file in the learning material repository (they are not created or edited on screen).
• The definition file includes settings such as available languages, as well as divisions (contest period, password) and the problems to be referenced (with point values).
• Contest administration rights belong to administrators of the subject or organization, or to administrators configured for each contest material.
• Administrators for each contest material are specified by listing email addresses as an array in adminEmails in the *.contest.yaml file.

  name: 10th SangiHackChallenge
  adminEmails:
    - organizer1@example.com
    - organizer2@example.com
  divisions:
    - id: main
      name: Main
      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 are skipped during import.
• Email addresses are trimmed of surrounding whitespace and matched case-insensitively. Duplicate email addresses are treated as a single administrator.
• Upon re-import, the contents of adminEmails are the source of truth. Even previous administrators will be removed from that contest material's administrators if they are not included in the current adminEmails.

Migration from the Legacy Contest System

• Legacy contests are automatically migrated by a migration script into contest materials under a single course in the public subject "Contests" (ID: contests) (all legacy contests were public, and participation eligibility was determined by division passwords).
• Administrators of legacy contests are migrated as administrators of each contest material.
• Before migration, results data (ranks and scores) and the administrator list are backed up to CSV.