PROFITINA LAUNDRY - morning pickup round
=======================================

minutes from the depot, and the road to take:
stop             min   route
Depot              0   Depot
Kertajaya          7   Depot -> Kertajaya
Dharmahusada      10   Depot -> Kertajaya -> Dharmahusada
Manyar            11   Depot -> Kertajaya -> Manyar
ITS               17   Depot -> Kertajaya -> Manyar -> ITS
Mulyosari         21   Depot -> Kertajaya -> Manyar -> Mulyosari
Keputih           22   Depot -> Kertajaya -> Manyar -> ITS -> Keputih

net cost per route leg (negative = partner rebate):
BELLMAN-FORD returns true
stop             cost   route
Depot               0   Depot
Kertajaya          14   Depot -> Kertajaya
Dharmahusada       20   Depot -> Kertajaya -> Dharmahusada
Manyar             22   Depot -> Kertajaya -> Manyar
ITS                34   Depot -> Kertajaya -> Manyar -> ITS
Mulyosari          42   Depot -> Kertajaya -> Manyar -> Mulyosari
Keputih            19   Depot -> Kertajaya -> Manyar -> ITS -> Keputih

now suppose the rebate is raised to -80:
BELLMAN-FORD returns false  (a driver could circle for ever and be paid for it)
