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  1. import itertools
  2. #from multiprocessing import Pool
  3.  
  4. problems = [
  5.         [8, 4, 26],
  6.         [12, 1, 28],
  7.         [6, 6, 32],
  8.         [10, 5, 35],
  9.         [3, 1, 38],
  10.         [11, 4, 48],
  11.         [9, 5, 50],
  12.         [11, 9, 51],
  13.         [13, 8, 53],
  14.         [7, 1, 64]
  15.         ]
  16. process, weight, duedate = 0, 1, 2
  17.  
  18. def f(perm):
  19.     flowtime = 0
  20.     WT = 0
  21.     for prob in perm:
  22.         flowtime += prob[process]
  23.         if flowtime >= prob[duedate]:
  24.             WT += (flowtime - prob[duedate]) * prob[weight]
  25.  
  26.     return WT, perm
  27.  
  28.  
  29. if __name__ == '__main__':
  30.     #pool = Pool(processes=8)
  31.     #WTS = pool.map(f, itertools.permutations(problems, 10))
  32.     WTS = (f(x) for x in itertools.permutations(problems, 10))
  33.     bestWT, perm = min(WTS, key=lambda item:item[0])
  34.  
  35.     print("-"*78)
  36.     print("bestWT:", bestWT)
  37.     print("problem:", perm)
  38.  
  39.  
  40. """
  41. bestWT: 218
  42. problem: ([8, 4, 26], [6, 6, 32], [10, 5, 35], [3, 1, 38], [11, 9, 51], [13, 8, 53], [9, 5, 50], [11, 4, 48], [7, 1, 64], [12, 1, 28])
  43. """
  44.  
Time limit exceeded #stdin #stdout 5s 10256KB
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https://ideone.com/1QMR7b
language:
Python 3 (python  3.12)
created:
12 years ago
visibility:
secret

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