old_contents: #!/usr/bin/env python3
  """Solves problem xxx from the Project Euler website"""
  
  
  def solve():
      """Solve the problem and return the result"""
      pass
  
  
  if __name__ == '__main__':
      print(solve())
  
new_contents: #!/usr/bin/env python3
  """Solves problem xxx from the Project Euler website"""
  
  
  def solve():
      """Solve the problem and return the result"""
      result = 0
  
      return result
  
  
  if __name__ == '__main__':
      print(solve())
  
subject: Update the template