Can we prioritize the collection locations and then distribution locations in simultaneous collection and distribution?

[prince4249]

I have 3 types of nodes.

1. Collection point ('C)
2. Distribution point ('D)
3. Both Collection and Distribution ('CD')

In any one of the routes, I wish to first visit all 'D's location then 'CD's and at the last 'C's . Is there any way to implement this ?

[Kuifje02]

You may be able to achieve this by carefully defining your graph. For example, if you do not create any edges from the Source to the C or CD points, the first point will necessarily be a D point. Similarly, do not create any edges from D points to the Sink, and no edges from D points to C points. And no edges from C to D, no edges from C to D and CD, etc ...