Optimal solution to COVRP instance E-51-5:
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Route = 12 5 38 49 9 34 30 10 39, Demand = 158, RLen = 73.299516
Route = 27 6 14 25 13 41 19 42 40, Demand = 158, RLen = 86.377493
Route = 32 1 22 28 31 26 8 48 7 23 24 43, Demand = 155, RLen = 105.208553
Route = 46 11 2 16 50 21 29 20 3 35 36, Demand = 160, RLen = 86.279226
Route = 47 18 4 17 37 44 15 45 33, Demand = 146, RLen = 64.897881
Sum of route lengths = 416.062669
CAP = 160
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