----------------  SOLUTION  -------------------

solution cost   : 381.69
number of trips : 4

trip 1, 4 customers, sequence : 16 19 21 14 
   weight    : 5600
   volume    : 531
   trip cost : 76.861

trip 2, 5 customers, sequence : 12 15 18 20 17 
   weight    : 5900
   volume    : 528
   trip cost : 83.668

trip 3, 7 customers, sequence : 13 11 4 3 6 8 10 
   weight    : 5800
   volume    : 652
   trip cost : 109.322

trip 4, 5 customers, sequence : 1 2 5 7 9 
   weight    : 5200
   volume    : 693
   trip cost : 111.839

__________________________________________________________

----------------  BIN PACKING  -------------------

trip 1 - vehicule packing see 2l_cvrp0503_T1.png
-----------------
customer 16, list of items : 1 2 3 
customer 19, list of items : 4 
customer 21, list of items : 5 6 7 
customer 14, list of items : 8 

trip 2 - vehicule packing see 2l_cvrp0503_T2.png
-----------------
customer 12, list of items : 1 
customer 15, list of items : 2 3 4 
customer 18, list of items : 5 6 
customer 20, list of items : 7 
customer 17, list of items : 8 9 10 

trip 3 - vehicule packing see 2l_cvrp0503_T3.png
-----------------
customer 13, list of items : 1 
customer 11, list of items : 2 
customer 4, list of items : 3 
customer 3, list of items : 4 5 6 
customer 6, list of items : 7 8 
customer 8, list of items : 9 
customer 10, list of items : 10 11 

trip 4 - vehicule packing see 2l_cvrp0503_T4.png
-----------------
customer 1, list of items : 1 2 
customer 2, list of items : 3 
customer 5, list of items : 4 5 
customer 7, list of items : 6 
customer 9, list of items : 7 8