We are looking for problems of varying difficulties and types (batch, output-only or interactive). To get an idea of style and difficulty, see the problems from the previous two years. The problems should be original and should not have been seen by any potential EGOI 2023 contestants. The topics and techniques used must conform to the IOI syllabus.

Minimum contents of submission:

• Author’s contact details (name, affiliation, email).
• Problem statement in English.
• Description of subtasks along with their expected difficulty.
• Solution sketches.

It is recommended that the submission also contains:

• Solution(s) in C++, Python, or any major programming language.
• Test data (especially sample test cases), or descriptions of how to generate it.
• Any additional comments.

Attach all files for one problem in a single zip archive and submit it to Nils Gustafsson at nils.gustafsson@kodsport.se.

We will be pleased to invite the authors of the selected problems to the contest. The authors are responsible for arranging their travel, but the costs for their stay will be covered.