Victor

Hey Chung-Kyun @Chung-Kyun， Thank you for your aid and suggestion. It works.

Hey Maliheh， Thank you for your suggestion.   Have a nice day, Victor

Hey Chung-Kyun, @Chung-Kyun Han Thank you for your sharing. It gives the same result with the strong constraints(2 constraints >= &<=) however it is faster.  But I can't understand here why it work...

Hey Riley @Riley Clement, Thank you very much. I took Maliheh's suggestion and found that her method will add too many constraints, leading too much time consuming because the Set B has too many po...

Hey Maliheh @Maliheh Aramon , Thank you for your reply. The first method work. But the 2nd doesn't works and give me feedback:  gurobipy.GurobiError: Constraint comparison not implemented Thank you...

Bonjour Riley,@Riley Clement Thank you for your reply and suggestion. I looked at these solutions and they are all good. However, it's a little different from what I thought. In the end, I have a b...