Pro-Carpet Company Manufactures Carpets in Northwest Indiana and Delivers Them

Short Answer

Pro-Carpet company manufactures carpets in Northwest Indiana and delivers them to warehouses and retail outlets. The network diagram given in the figure below shows the possible routes and travel times (in minutes) from the carpet plant to the various warehouses or retail outlets.
V = Valparaiso, P=Portage, G=Gary, Ha=Hammond, Hi=Highland, M = Merillville, L = Lansing
-Write the constraint associated with the Valparasio (source) node for the 0-1 integer linear programming formulation of the shortest route problem.