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

solution cost   : 687.603
number of trips : 7

trip 1, 14 customers, sequence : 30 48 47 36 37 20 70 60 71 69 21 74 2 68 
   weight    : 218
   volume    : 14
   trip cost : 113.286

trip 2, 9 customers, sequence : 7 53 11 38 65 66 59 14 35 
   weight    : 209
   volume    : 9
   trip cost : 104.909

trip 3, 12 customers, sequence : 6 33 73 1 43 41 42 64 22 61 28 62 
   weight    : 216
   volume    : 12
   trip cost : 117.351

trip 4, 3 customers, sequence : 75 4 67 
   weight    : 80
   volume    : 3
   trip cost : 20.7703

trip 5, 13 customers, sequence : 34 52 27 45 29 5 15 57 13 54 19 8 46 
   weight    : 218
   volume    : 13
   trip cost : 97.2363

trip 6, 13 customers, sequence : 17 3 44 32 50 18 24 49 56 23 63 16 51 
   weight    : 217
   volume    : 13
   trip cost : 117.083

trip 7, 11 customers, sequence : 26 12 72 58 10 31 55 25 9 39 40 
   weight    : 206
   volume    : 11
   trip cost : 116.967