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

solution cost   : 819.558
number of trips : 10

trip 1, 11 customers, sequence : 75 1 2 4 6 9 11 8 7 3 5 
   weight    : 170
   volume    : 11
   trip cost : 56.1748

trip 2, 9 customers, sequence : 13 17 18 19 15 16 14 12 10 
   weight    : 200
   volume    : 9
   trip cost : 96.0398

trip 3, 9 customers, sequence : 34 36 39 38 37 35 31 33 32 
   weight    : 200
   volume    : 9
   trip cost : 97.2272

trip 4, 6 customers, sequence : 66 62 74 63 65 67 
   weight    : 150
   volume    : 6
   trip cost : 43.5905

trip 5, 14 customers, sequence : 81 78 76 71 70 73 77 79 80 72 61 64 68 69 
   weight    : 200
   volume    : 14
   trip cost : 137.019

trip 6, 9 customers, sequence : 99 100 97 93 92 94 95 96 98 
   weight    : 190
   volume    : 9
   trip cost : 95.9431

trip 7, 10 customers, sequence : 91 89 88 85 84 82 83 86 87 90 
   weight    : 170
   volume    : 10
   trip cost : 76.0696

trip 8, 11 customers, sequence : 21 22 23 26 28 30 29 27 25 24 20 
   weight    : 170
   volume    : 11
   trip cost : 50.8036

trip 9, 13 customers, sequence : 47 49 52 50 51 48 46 45 44 40 41 42 43 
   weight    : 160
   volume    : 13
   trip cost : 64.8075

trip 10, 8 customers, sequence : 59 60 58 56 53 54 55 57 
   weight    : 200
   volume    : 8
   trip cost : 101.883