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

solution cost   : 358.402
number of trips : 4

trip 1, 6 customers, sequence : 14 13 16 18 10 12 
   weight    : 83
   volume    : 579
   trip cost : 118.567

trip 2, 3 customers, sequence : 17 8 2 
   weight    : 85
   volume    : 482
   trip cost : 49.9474

trip 3, 5 customers, sequence : 7 9 3 15 4 
   weight    : 84
   volume    : 466
   trip cost : 86.5564

trip 4, 6 customers, sequence : 5 20 11 19 6 1 
   weight    : 77
   volume    : 633
   trip cost : 103.332

__________________________________________________________

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

trip 1 - vehicule packing see 2l_cvrp0305_T1.png
-----------------
customer 14, list of items : 1 2 
customer 13, list of items : 3 
customer 16, list of items : 4 5 6 7 
customer 18, list of items : 8 9 10 11 
customer 10, list of items : 12 13 14 
customer 12, list of items : 15 

trip 2 - vehicule packing see 2l_cvrp0305_T2.png
-----------------
customer 17, list of items : 1 2 3 4 
customer 8, list of items : 5 6 7 8 
customer 2, list of items : 9 10 

trip 3 - vehicule packing see 2l_cvrp0305_T3.png
-----------------
customer 7, list of items : 1 2 3 
customer 9, list of items : 4 
customer 3, list of items : 5 6 
customer 15, list of items : 7 8 9 10 
customer 4, list of items : 11 

trip 4 - vehicule packing see 2l_cvrp0305_T4.png
-----------------
customer 5, list of items : 1 
customer 20, list of items : 2 3 4 5 
customer 11, list of items : 6 7 
customer 19, list of items : 8 
customer 6, list of items : 9 10 
customer 1, list of items : 11 12 13