IOI tasks are typically focused on the design of efficient, correct algorithms. Input and output are to be kept as simple as possible. The IOI needs both simple and hard tasks, that are creative, so if some of your designed tasks seem easy but creative please submit them too.
The competition tasks from previous IOIs can provide, by example, good guidance on the desired composition of tasks:
However, the nature of previous tasks should not constrain the design of new tasks; the submission of novel task types not yet seen in IOIs is encouraged. We are particularly interested in tasks whose basic rules (if not optimal strategy) are accessible to a wide audience, and tasks that illustrate algorithms and computational problems that arise in a variety of human endeavors. Open-ended tasks, ones that do not necessarily have a known efficient or optimal solution, are welcome.
We are also particularly interested in tasks that go beyond the typical format in which a program collects input, performs some computation, and returns output. Examples include “reactive” and “output only” tasks which have been used occasionally in previous IOIs. Tasks with some measure of solution effectiveness other than CPU time consumption are encouraged.
A syllabus listing what material is generally considered acceptable for IOI tasks can be found at http://people.ksp.sk/~misof/ioi-syllabus/. The syllabus is not meant to be restrictive, but to serve as a guideline for task preparation.
To ensure a fair and interesting competition for all, tasks should satisfy the following conditions:
A task submission must contain:
It is also strongly recommended to contain:
Any comments related to the task are also welcome and would be highly appreciated.
Submitted tasks must be kept in strict confidence until the end of IOI 2018. At this time, authors are free to do whatever they wish with the tasks, but may be asked to have them considered for IOI 2019, in which case strict confidence would have to be maintained through until IOI 2019.
Task materials must be placed together in a single file (use .zip or .tgz for multiple files) and submitted online at https://isc.ioinformatics.org/dropbox/. When submitting a task, you will have to enter the authorization code “Sunrise”. Please do not encrypt your submission: the upload page will do this automatically.
Please note that by submitting the author asserts that he or she is authorized to grant, and does grant IOI an exclusive license to use the material until September 9, 2018, and a perpetual non-exclusive transferable license to reproduce the material. The author warrants that the requirements in this call for submissions are met, and that the materials will not be disclosed to any third party for the duration of the exclusive license.
Task authors and their collaborators must not use a submitted task, or a variant thereof, or techniques specific to that task, in any competition or training until IOI 2018 has ended. In case of doubt, contact the ISC. Note that we do not wish to forbid authors of submitted tasks to be involved in other competitions and training, but we do ask them to take all necessary precautions to safeguard confidentiality.
Receipt of submissions will be confirmed via the provided contact address. The IOI Scientific Committee will carefully review all submissions and will select a short-list of around 10 tasks, six of which will eventually be given at the IOI 2018 competition.
The authors of all submitted tasks will receive feedbacks from the ISC.
All authors of the selected tasks will be acknowledged at the contest website and the final GA meeting of IOI 2018.
The authors of the tasks selected for the short-list will be invited to attend the IOI 2018 in Tsukuba as Invited Guests (authors will be responsible for their travel, but IOI 2018 will cover their stay). However, they will not be informed prior to the competition as to whether their tasks will be used at the actual contest or whether the IOI Scientific Committee has substantially modified their tasks.
The problems of tasks included in the actual competition will be made available under a Creative Commons Attribution license (CC-BY).
Please direct questions about the call for tasks to hsc [at] ioi2018.jp