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Professor

Signing in and the meaning of each status are in the KOJ Overview.

The interface is in Korean; screen and button names below are quoted as they appear.

  • There is no regrading. Editing test cases changes results only for submissions made afterward; earlier submissions keep their original result.
  • Run one lookup and one submission from a sample student account before class. Missing test cases surface only this way.

Creating a Course​

Course list Course creation modal

  • Courses have no visibility setting. Start and end datetimes alone decide whether a course is active or past. Visibility is set per lab.
  • Deleting a course affects its labs, problems, and submissions.

Enrolling Students and TAs​

Course page Enrollment screen

  • A new student's initial password is student number + 1234. Existing students keep their password.
  • An Excel upload must keep the template's columns unchanged.

Creating a Lab​

Course page Lab creation modal

  • Visibility and the lab period together decide whether students can reach it.
  • 실습 불러오기 (import lab) copies an existing lab.

Creating a Problem​

Problem list Problem creation modal

  • The body is Markdown and has a preview tab. Attachments and starter code are registered here as well.
  • The grader picks its runner from the problem type: 코드 제출 (code submission), 빈칸 채우기 (fill in the blank), 클래스 구현 (class implementation). The language and type you choose must be a combination grading supports.

Registering Test Cases​

Test case list Test case form

Open it from 테스트 케이스 확인하기 (test cases) on the problem page.

  • Standard input and output can be uploaded as files instead of typed. File I/O problems need their input/output files registered too. Saved cases are stored on the server as std.in and std.out.
  • Submit a sample correct solution afterward and confirm it comes back 정답 (accepted). Missing test cases are the main cause of internal_error.

Checking Submissions​

Grading status Per-problem submissions

  • Submissions stuck at 대기 (waiting) or 실행 중 (running) may indicate a grading server problem. Contact the administrator.
  • Clustered 내부 에러 (internal error) results mean the problem's test cases should be checked first.
  • The latest accepted submission can be downloaded.

Grades and Quizzes​

Course page Gradebook

  • Pick a lab and student to see per-problem results and totals, and export to CSV.
  • Because there is no regrading, editing test cases mid-term means submissions before and after are scored against different criteria.
  • Editing a quiz can affect responses already submitted.