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

solution cost   : 1176.68
number of trips : 6

trip 1, 4 customers, sequence : 26 27 25 13 
   weight    : 6250
   volume    : 779
   trip cost : 209.416

trip 2, 4 customers, sequence : 31 15 1 2 
   weight    : 3250
   volume    : 778
   trip cost : 161.246

trip 3, 5 customers, sequence : 7 8 10 9 4 
   weight    : 5450
   volume    : 757
   trip cost : 169.558

trip 4, 5 customers, sequence : 11 32 6 5 3 
   weight    : 3120
   volume    : 723
   trip cost : 138.616

trip 5, 9 customers, sequence : 12 18 19 21 20 22 23 24 17 
   weight    : 5000
   volume    : 773
   trip cost : 258.079

trip 6, 5 customers, sequence : 30 29 16 28 14 
   weight    : 6300
   volume    : 772
   trip cost : 239.764

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

trip 1 - vehicule packing see 2l_cvrp1505_T1.png
-----------------
customer 26, list of items : 1 2 3 
customer 27, list of items : 4 5 6 7 8 
customer 25, list of items : 9 10 11 12 13 
customer 13, list of items : 14 15 16 

trip 2 - vehicule packing see 2l_cvrp1505_T2.png
-----------------
customer 31, list of items : 1 2 3 4 5 
customer 15, list of items : 6 7 8 9 10 
customer 1, list of items : 11 12 13 
customer 2, list of items : 14 15 16 17 18 

trip 3 - vehicule packing see 2l_cvrp1505_T3.png
-----------------
customer 7, list of items : 1 2 3 4 5 
customer 8, list of items : 6 
customer 10, list of items : 7 8 9 10 
customer 9, list of items : 11 12 13 14 
customer 4, list of items : 15 16 17 18 19 

trip 4 - vehicule packing see 2l_cvrp1505_T4.png
-----------------
customer 11, list of items : 1 2 3 4 5 
customer 32, list of items : 6 7 8 9 10 
customer 6, list of items : 11 12 13 14 
customer 5, list of items : 15 
customer 3, list of items : 16 

trip 5 - vehicule packing see 2l_cvrp1505_T5.png
-----------------
customer 12, list of items : 1 2 
customer 18, list of items : 3 4 5 6 7 
customer 19, list of items : 8 9 10 11 
customer 21, list of items : 12 13 14 
customer 20, list of items : 15 
customer 22, list of items : 16 
customer 23, list of items : 17 18 
customer 24, list of items : 19 20 21 22 23 
customer 17, list of items : 24 25 

trip 6 - vehicule packing see 2l_cvrp1505_T6.png
-----------------
customer 30, list of items : 1 2 3 4 5 
customer 29, list of items : 6 7 8 9 
customer 16, list of items : 10 11 12 13 14 
customer 28, list of items : 15 16 17 18 
customer 14, list of items : 19 20