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

solution cost   : 678.748
number of trips : 4

trip 1, 8 customers, sequence : 19 20 22 17 14 15 16 3 
   weight    : 2235
   volume    : 746
   trip cost : 259.952

trip 2, 6 customers, sequence : 7 8 5 4 21 18 
   weight    : 1595
   volume    : 726
   trip cost : 208.464

trip 3, 4 customers, sequence : 2 1 6 10 
   weight    : 4484
   volume    : 655
   trip cost : 130.567

trip 4, 4 customers, sequence : 12 11 13 9 
   weight    : 1875
   volume    : 520
   trip cost : 79.7655

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

trip 1 - vehicule packing see 2l_cvrp0703_T1.png
-----------------
customer 19, list of items : 1 2 3 
customer 20, list of items : 4 
customer 22, list of items : 5 
customer 17, list of items : 6 7 8 
customer 14, list of items : 9 
customer 15, list of items : 10 
customer 16, list of items : 11 
customer 3, list of items : 12 13 14 

trip 2 - vehicule packing see 2l_cvrp0703_T2.png
-----------------
customer 7, list of items : 1 
customer 8, list of items : 2 
customer 5, list of items : 3 
customer 4, list of items : 4 5 6 
customer 21, list of items : 7 
customer 18, list of items : 8 9 10 

trip 3 - vehicule packing see 2l_cvrp0703_T3.png
-----------------
customer 2, list of items : 1 2 
customer 1, list of items : 3 4 5 
customer 6, list of items : 6 
customer 10, list of items : 7 8 9 

trip 4 - vehicule packing see 2l_cvrp0703_T4.png
-----------------
customer 12, list of items : 1 2 3 
customer 11, list of items : 4 5 
customer 13, list of items : 6 
customer 9, list of items : 7 8