IOI tasks, tests and solutions
Olympiads · International Olympiad in Informatics
Papers and answersInternational Olympiad in Informatics
- Details checked
- Access confirmed
- Paper opened
Task statements from every International Olympiad in Informatics since 1989, with test data and solutions where the year’s hosts published them.
Before you rely on itWhat each year holds depends on its hosts: some give tasks, tests and solutions, others less.
With the official test data you can judge your own solution the way the contest did, not just compare it with someone else’s.Telebem editors
Details
- Exams
- International Olympiad in Informatics
- What you get
- Real past papersPapers candidates actually sat.
- Answers or mark schemesKeys, mark schemes, worked solutions or sample answers.
- How you get in
- Free to downloadOpen to anyone, no account needed.
- Years
- 1989–2026
- Subjects
- Computer science
- Where it’s set
- International
- Languages
- English
- Formats
- PDF · ZIP
- Set by
- International Olympiad in Informatics
What we checked
- Details checked
The exam body, the address and the archive page were opened and checked against each other. Last run .
- Access confirmed
What is published, what is held back and for how long was read from the exam body’s own statement. Last run .
- Paper opened
An editor downloaded a real paper from it, and its answers where there are any, and opened them. Last run .
Every paper here comes from the body that set it. Sites that re-upload papers without permission are not listed. What the marks cover
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