old_contents: import sys
  import time
  from random import shuffle
  from vania.fair_distributor import FairDistributor
  
  
  def main():
      # User input for the number of targets and objects.
      users = ['user1', 'user2']
      tasks = ['task1', 'task2']
      preferences = [
          [1, 2],
          [2, 1],
      ]
  
      # Run solver
      distributor = FairDistributor(users, tasks, preferences)
      output = distributor.distribute(output='problem.lp')
  
      # Output
      print(output)
  
  if __name__ == '__main__':
      main()
  
new_contents: from vania import FairDistributor
  
  
  def main():
      # User input for the number of targets and objects.
      users = ['user1', 'user2']
      tasks = ['task1', 'task2']
      preferences = [
          [1, 2],
          [2, 1],
      ]
  
      # Run solver
      distributor = FairDistributor(users, tasks, preferences)
      output = distributor.distribute(output='problem.lp')
  
      # Output
      print(output)
  
  if __name__ == '__main__':
      main()
  
subject: Remove unused imports (#10)