This is the goal function, including all expenses incurred in the logistics to get the answer to this problem must run twice as many model n suppliers list.
This is the function that includes all costs incurred in logistics. To get the answer to this problem is to apply the model to run two times the number of suppliers n revenue.
This method has the objective function that combines all the expenses occurred in logistics. To get the answer of this problem is to glue running model 2 times according to the number of suppliers n) .