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

solution cost   : 1234.14
number of trips : 7

trip 1, 6 customers, sequence : 2 18 19 17 15 14 
   weight    : 3850
   volume    : 716
   trip cost : 196.472

trip 2, 4 customers, sequence : 13 1 31 30 
   weight    : 5150
   volume    : 717
   trip cost : 157.583

trip 3, 1 customers, sequence : 4 
   weight    : 1200
   volume    : 265
   trip cost : 96.6644

trip 4, 6 customers, sequence : 21 20 22 23 24 25 
   weight    : 4850
   volume    : 774
   trip cost : 256.718

trip 5, 4 customers, sequence : 32 10 9 8 
   weight    : 3350
   volume    : 770
   trip cost : 147.722

trip 6, 6 customers, sequence : 12 11 6 7 5 3 
   weight    : 4170
   volume    : 693
   trip cost : 137.643

trip 7, 5 customers, sequence : 26 27 28 16 29 
   weight    : 6800
   volume    : 664
   trip cost : 241.338

__________________________________________________________

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

trip 1 - vehicule packing see 2l_cvrp1504_T1.png
-----------------
customer 2, list of items : 1 
customer 18, list of items : 2 3 4 5 
customer 19, list of items : 6 7 
customer 17, list of items : 8 9 
customer 15, list of items : 10 11 12 13 
customer 14, list of items : 14 15 

trip 2 - vehicule packing see 2l_cvrp1504_T2.png
-----------------
customer 13, list of items : 1 2 3 4 
customer 1, list of items : 5 
customer 31, list of items : 6 7 8 
customer 30, list of items : 9 10 11 12 

trip 3 - vehicule packing see 2l_cvrp1504_T3.png
-----------------
customer 4, list of items : 1 2 3 4 

trip 4 - vehicule packing see 2l_cvrp1504_T4.png
-----------------
customer 21, list of items : 1 2 
customer 20, list of items : 3 4 
customer 22, list of items : 5 6 7 8 
customer 23, list of items : 9 
customer 24, list of items : 10 
customer 25, list of items : 11 12 13 14 

trip 5 - vehicule packing see 2l_cvrp1504_T5.png
-----------------
customer 32, list of items : 1 2 3 4 
customer 10, list of items : 5 6 7 
customer 9, list of items : 8 9 10 11 
customer 8, list of items : 12 13 14 15 

trip 6 - vehicule packing see 2l_cvrp1504_T6.png
-----------------
customer 12, list of items : 1 2 
customer 11, list of items : 3 4 
customer 6, list of items : 5 6 
customer 7, list of items : 7 
customer 5, list of items : 8 
customer 3, list of items : 9 10 

trip 7 - vehicule packing see 2l_cvrp1504_T7.png
-----------------
customer 26, list of items : 1 2 3 
customer 27, list of items : 4 5 
customer 28, list of items : 6 7 8 
customer 16, list of items : 9 10 11 12 
customer 29, list of items : 13 14