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

solution cost   : 1013.29
number of trips : 5

trip 1, 8 customers, sequence : 15 17 25 24 23 20 22 21 
   weight    : 5850
   volume    : 756
   trip cost : 257.378

trip 2, 5 customers, sequence : 13 1 14 31 30 
   weight    : 6750
   volume    : 698
   trip cost : 168.105

trip 3, 5 customers, sequence : 4 5 32 12 3 
   weight    : 2890
   volume    : 755
   trip cost : 162.651

trip 4, 7 customers, sequence : 18 19 26 27 28 16 29 
   weight    : 7650
   volume    : 670
   trip cost : 275.254

trip 5, 7 customers, sequence : 2 11 10 9 8 7 6 
   weight    : 6230
   volume    : 747
   trip cost : 149.9

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

trip 1 - vehicule packing see 2l_cvrp1502_T1.png
-----------------
customer 15, list of items : 1 
customer 17, list of items : 2 
customer 25, list of items : 3 4 
customer 24, list of items : 5 
customer 23, list of items : 6 
customer 20, list of items : 7 
customer 22, list of items : 8 9 
customer 21, list of items : 10 

trip 2 - vehicule packing see 2l_cvrp1502_T2.png
-----------------
customer 13, list of items : 1 2 
customer 1, list of items : 3 4 
customer 14, list of items : 5 6 
customer 31, list of items : 7 8 
customer 30, list of items : 9 10 

trip 3 - vehicule packing see 2l_cvrp1502_T3.png
-----------------
customer 4, list of items : 1 2 
customer 5, list of items : 3 
customer 32, list of items : 4 5 
customer 12, list of items : 6 
customer 3, list of items : 7 8 

trip 4 - vehicule packing see 2l_cvrp1502_T4.png
-----------------
customer 18, list of items : 1 
customer 19, list of items : 2 
customer 26, list of items : 3 4 
customer 27, list of items : 5 
customer 28, list of items : 6 7 
customer 16, list of items : 8 
customer 29, list of items : 9 

trip 5 - vehicule packing see 2l_cvrp1502_T5.png
-----------------
customer 2, list of items : 1 
customer 11, list of items : 2 3 
customer 10, list of items : 4 5 
customer 9, list of items : 6 7 
customer 8, list of items : 8 
customer 7, list of items : 9 10 
customer 6, list of items : 11