Ledger Nano X - The secure hardware wallet
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  1. import numpy
  2. from binomialPoisson import *
  3.  
  4. hugeNumber = float("inf")
  5. unused = -1000
  6.  
  7. stages = 10
  8. seats = 50
  9. fullFare = 500
  10. discountFare = 250
  11. costOccupied = 8
  12.  
  13. meanFullDemand = numpy.array([unused,
  14.                               1.3, 1.4, 1.9, 2.0, 2.2,
  15.                               2.8, 2.2, 2.4, 1.8, 3.7])
  16.  
  17. maxCanRelease = [unused, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5]
  18.  
  19.  
  20. f = numpy.zeros([stages+2, seats+1])
  21. x = numpy.zeros([stages+1, seats+1], dtype=int)
  22.  
  23. # Iterate through stages
  24. for t in range(stages, 0, -1):
  25.  
  26.     demandProbability = poisson(meanFullDemand[t], seats)
  27.  
  28.     # Iterate through possible states (ie, number of seats unoccupied)
  29.     for i in range(seats + 1):
  30.  
  31.         value = -hugeNumber
  32.         maxReleased = min(maxCanRelease[t], seats-i)
  33.  
  34.         for d in range(maxReleased):
  35.  
  36.             moveValue = -costOccupied*d + 250*d
  37.  
  38.             seatsOccupied = i + d
  39.             seatsUnoccupied = seats - seatsOccupied
  40.  
  41.             for r in range(seatsUnoccupied + 1):
  42.  
  43.                 moveValue += demandProb[r]
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