We're excited to announce that the Call for Tasks for the IOI 2026 is officially open!
The Host Scientific Committee for IOI 2026 would love to invite everyone (except for potential contestants) to submit their tasks. If you know anyone who might be interested in creating problems, please share this message with them.
We welcome tasks of all difficulty levels, but we'd especially appreciate submissions for easier problems. They can be some of the most challenging to create, and we always need more of them.
You can submit your tasks through the following link, where you'll also find more details about both the problems themselves and the submission process: https://ioi2026.uz/call-for-tasks.
The deadline for the call for tasks is January 5th, 2026, 23:59 UTC+5.
For any questions please reach out to hsc [at] ioi2026.uz.
Bumping this, as the reminder that the call for tasks is still open and we're still looking for interesting problems!
Would you "especially appreciate" just as much some hard tasks that can't warrant a much more easy solution for 75 or so points?
Nope, problem even easier than 2021's DNA it is!
(Proposed something even easier than 2010's Cluedo. yuantiji.ac yields nothing, so it is more original than 2019's Shoes. Yay!)
...if it is intended to be the "hard" task, then probably. If it's the anti-AC problem, every ceiling is removed (see: Migrations' 250 lines of if-else)
The deadline for Call for Tasks for IOI 2026 has now been extended to January 5th, 2026, 23:59 UTC+5.
More info: https://ioi2026.uz/call-for-tasks
Bumping this one more time, as the deadline is in just 4 days!