Western-European Olympiad in Informatics

WEOI is an international subcontinental informatics olympiad for K12 students. Its goal is to add an additional educational value in algorithms and programming to Western-European students.

Participants are selected by the country’s national olympiad. Each contestant will represent its country individually.


Past editions:

The NetherlandsJune 16-18

Future locations:

2024Great Britain


The regulations are available here.


The contest environment is this virtual machine.
All contestants must be running from within this VM.

A guide to install and use the virtual machine can be found here.

Attention: This virtual machine has internet restricted to only allow access to the contest platform.

During contests, the tasks are available at https://contest.weoi.org

Contact us

Or send us an email at info@weoi.org