Taking Part in a Contest Material

Contest materials are competition-style assignments delivered as one type of material. They are placed in the hierarchy of subject → class → material, and hold an open period (division), rankings, and results.

Steps for Participants

1. Open the contest material within the class. The contest description, the problem list (with scores), the rules, and 参加登録 (Register) are displayed.
2. Press 参加する (Join) for the period you want to take part in. If a password is set, enter it.
3. When the open period begins, you can proceed to the problem list via 問題一覧を開く (Open problem list). If you keep the screen open before the start, the problem list opens automatically when the contest begins.
4. Solve each problem and submit it. The way to solve problems is the same as in コーディング問題を解く.
5. Check your rank, score, and the correct-answer status of each problem via ランキング (Rankings) at the top of the screen. You can review your own submissions under 自分の提出 (My Submissions).

Meaning of the Displayed Information

• 得点 (Score): The total of the scores of the problems you answered correctly.
• 順位 (Rank): Determined in descending order of total score. For ties, the one who submitted earlier ranks higher.
• Incorrect submissions carry no penalty.
• ランキング (Rankings) can be viewed by participants after the start of the period they joined, and by non-participants after the end of all periods. Contest administrators can view it at any time.

For Administrators (Creating a Contest)

• Contest materials are defined by a *.contest.yaml file in the learning material repository, just like ordinary materials (they are not created or edited on screen).
• In addition to settings such as available languages, the definition file describes the divisions (open periods and passwords) and the problems referenced (with scores).
• Contest administration rights belong to the administrators of the subject or organization to which it belongs, or to administrators designated for each contest material.
• Administrators for each contest material are specified by listing email addresses as an array under adminEmails in *.contest.yaml.

  name: 第10回SangiHackChallenge
  adminEmails:
    - organizer1@example.com
    - organizer2@example.com
  divisions:
    - id: main
      name: 本戦
      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 have leading and trailing whitespace removed and are matched case-insensitively. Specifying the same email address more than once still treats it as a single administrator.
• On re-import, the contents of adminEmails are authoritative. Even former administrators are removed from administration of that contest material if they are not included in the current adminEmails.