Problems
Problems of the open stage and of stages that have ended.
Testing stage
Open until 4 Jan 2027Until Stage 1 opens, a testing stage runs with a few practice problems so you can register, try the submission format and get used to the flow. Its scores don't count towards the competition.
ProblemIndexThe problem's key: its folder name in a submission, and its name in URLs and the API.Time limit
- Dial-a-Ride Problem (DARP)Routing · Combinatorialcordeau200660 s per instance · 2 test instances
- Orienteering Problem (OP)Routing · Combinatorialfischetti199860 s per instance · 2 test instances
- Origin-Destination Integer Multicommodity Flow (ODIMCF)Network Design & Location · Combinatorialbarnhart200060 s per instance · 1 test instance
- Set Partitioning for Airline Crew Scheduling (SPP)Scheduling · Combinatorialhoffman199360 s per instance · 1 test instance
- Stochastic Capacitated Facility Location Problem (SCFLP)Network Design & Location · Stochasticbodur201760 s per instance · 2 test instances
- Vehicle Routing Problem with Divisible Deliveries and Pickups (VRPDDP)Routing · Mixed-integernagy201560 s per instance · 2 test instances