I am using Google OR-Tools to solve a problem where technicians work on tasks to fix machines. The machines are all initially broken and the objective is to fi
I am trying to create a vehicle routing problem for multi-drivers with pickup and drop-off locations. The starting point for each driver is their current locati
In a simple vehicle routing problem solved by Google OR-tools library, two nodes (2, 3) are marked as optional with visiting penalty set to 0. The shortest path