This is a project using Gurobi to vehicle routing problem.

python 3.5, graphics.py Gurobi 6.5.2

Command line python src/vrpmain.py *.graph, where *.graph is the graph file identify the necessary information for the problem, the example file could be found at data/eil51.graph.

###Graph file format

The graph file format is based on the TSPLIB sample data file, and add some additional attributes like DELIVER_SECTION and LOCKER_SECTION.

The output for each problem is the optimal delivery assignments for all the delivers, the capacity assignment for each locker and a optiaml solution graph.

Below is the optimal solution for the sample data data/eil51.graph.