Abir Chakraborty

Thank you so much Eli for the solution. It is working as expected.  Next, I am including time window constraints for CVRPTW problem. However, I have coded a slightly different approach of savings m...

Hi Eli,  The reason I was going for an explicit index for vehicles is to add one more objective of minimizing the number of vehicles used. Also, for some reason the subtour function was not working...

Hi Eli,  Here is how I modified the functions to enforce the subtour elimination: I have a helper function to renumber the nodes.  def renumber(tuples):    numbers = []    for t in tuples:        ...

Got it. I am assuming I have apply the lazy callback for each camione individually. Towards that I have modified the original functions in the following way:    # Callback - use lazy constraints t...

The above code creates disconnected routes. For example, for C1,  Ruta[DC,Ret8,C1] 1Ruta[Ret3,Ret4,C1] 1Ruta[Ret4,Ret3,C1] 1Ruta[Ret8,DC,C1] 1 This is because there is no constraint that says that ...