The 1st WEOI (2023) was held on June 16th – 18th, in a hybrid format at the Eindhoven University of Technology in the Netherlands.
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Problemset and editorial
This edition’s problemset and solutions editorial is available here.
Results
GOLD
Charles Dai
Erekle Roinishvili
Innokentiy Kaurov
Yaël Arn
Hanks Chong
Samuel Trajtenberg
SILVER
Elias Bauer
Oscar Fischler
Francesco Vercellesi
Darío Martínez Ramírez
Théo Hollender
Zhiyi Luo
James Bamber
Josia John
Justin Leung
BRONZE
Alejandro Vivero Puga
Jona Bedaux
Ronan Legros
Linus Lüchinger
Tiago Sousa
Pablo Sáez Reyes
Tomás Faria
Andrej Ševera
Matteo Arcari
Ali-Rayan Boudjema
Boris Hall
Luis Barbosa
Sergio Domínguez Alonso
Elia Soldati
Full scoreboard
The full scoreboard is available at:
https://weoi.org/results/2023/
Gallery
Participating Teams
In alphabetical order
 | Belgium Onsite Team Leaders Henri Devillez Catherine Durdu | Akram Zakine Alban Van Vyve Mikhail Skvortsov Noé Zech Tibor Varga Zhiyi Luo |
 | France Online Team Leaders Mathias Hiron Simon Mauras Hugo Peyraud-Magnin | Ali-Rayan Boudjema Anatole Bouton Charles Dai Oscar Fischler Ronan Legros Théo Hollender |
 | Ireland Online Team Leaders Suneet Mahajan Benjamin Faltin | Ayushi Mahajan Isaac Lee Piotr Stelmaszek Weichen Huang Yuan Li |
 | Italy Onsite Team Leaders Dario Ostuni Filippo Casarin | Alessandro Farcas Elia Soldati Francesco Vercellesi Glauco Masi James Bamber Matteo Arcari |
 | Luxembourg Onsite Team Leaders Jarod Differdange Pascal Zeihen | Damien Pirotte Daniel Murphy Hlib Zabudko Thanh-Viêt Jean Nguyen Tom Roth Vadym Kazmin |
 | Netherlands Onsite Team Leaders Fieke Dekkers Marcel Vlastuin | Aniek Goeree Emil Riedeman Floris de Vooys Iris Samtleben Jona Bedaux William Rijksen |
 | Portugal Online Team Leaders Pedro Ribeiro Pedro Paredes | Diego Ferreira Laura Muliar Luis Barbosa Pedro Peixoto Tiago Sousa Tomás Faria |
 | Spain Online Team Leaders Jacobo Vilella Vilahur Joan Alemany Flos | Alejandro Vivero Puga Darío Martínez Ramírez Innokentiy Kaurov Luis Gutiérrez Garrido Pablo Sáez Reyes Sergio Domínguez Alonso |
 | Switzerland Online Team Leaders Charlotte Knierim Timon Gehr Jan Schär | Andrej Ševera Elias Bauer Jasmin Studer Josia John Linus Lüchinger Yaël Arn |
 | United Kingdom Onsite Team Leaders Richard Forster David Mestel | Boris Hall Erekle Roinishvili Hon Chong Justin Leung Samuel Trajtenberg |
Schedule
| Day | Time | Onsite contestants | Online contestants |
|---|---|---|---|
| June 16th (Friday) | 18:00-21:00 | Dinner, Movie | |
| June 17th (Saturday) | 10:00-11:00 | Lecture by Tom Verhoeff | Video stream |
| 11:00-12:00 | Practice | Practice | |
| 12:00-14:00 | Lunch | ||
| 14:00-18:00 | Contest | Contest | |
| 18:15-19:00 | Dinner | ||
| 19:15-19:45 | Explanations | Video stream | |
| 19:45-20:15 | Awards ceremony | Video stream | |
| 20:15-22:00 | Games | ||
| June 18th (Sunday) | 09:00-13:00 | Lecture, Lunch |
Environment
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.
The tasks are available at https://training.olinfo.it/#/tasks/1?q=weoi
Regulations
This is a frozen copy of the WEOI regulations as they were in 2023:
Contributors
This year’s olympiad was made possible thanks to the contributions of:
| Host contributors | Eljakim Schrijvers Tom Verhoeff |
| Scientific contributors | Félix Moreno Peñarrubia Omer Giménez Llach Jelmer Firet Suneet Mahajan Luca Versari Blanca Huergo Muñoz Jarod Differdange Hugo Peyraud-Magnin Simon Mauras |
| Technical contributors | Jacobo Vilella Vilahur Luca Versari Simon Mauras |
| Design contributors | Andrea Ciprietti Jacobo Vilella Vilahur |
| Communication contributors | Jacobo Vilella Vilahur Luca Versari Simon Mauras |