ROADEF/EURO 2026 Challenge is officially open!

The ROADEF/EURO Challenge was be announced at the EURO 2025 conference in Leeds, UK.

Find all information regarding rules, organization, and the roadmap (Sprint, Qualification, and Final phases) at https://roadef.org/challenge/

This year's edition, titled "Keep the Flow!", focuses on the optimization problem of T-Adaptive Segment Routing (T-ASR). Proposed by Orange Research, the challenge invites participants to design efficient optimization algorithms for routing in large-scale telecommunication networks, taking into account scheduled maintenance interventions and reconfiguration budgets.

Watch the official teaser for a quick overview of the problem:

Key resources already available:
* Detailed subject description:full technical specifications.
* Initial dataset (Set A, for the sprint phase): to begin testing your algorithms.
* Solution checker: a C++20 tool to validate your results.
* Networktools Library: A fast header-only C++20 library for modeling and solving network optimization problems.

Prizes & Participation:
The competition is endowed with a total prize pool of €35,000, with categories for best teams, junior researchers (students), and scientific contributions.

The ROADEF challenge team: Zacharie Ales, Ronan Bocquillon, Eric Bourreau, Safia Kedad-Sidhoum, David Savourey.
EURO Challenge Team: Marc Sevaux.
The Orange Research challenge team: Amal Benhamiche, Yannick Carlinet, Morgan Chopin, Éric Gourdin, Nancy Perrot.



Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 International License and the GNU Free Documentation License (unversioned, with no invariant sections, front-cover texts, or back-cover texts).

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