input: 
  def add_marks(marks: List[int], mark: int) -> List[int]:
      """ Takes a list of marks and an integer mark, adds the integer mark to each 
      value in the list, and returns the new list.
      
      Example:
      >>> add_marks([87, 56, 99, 54], 4)
      [91, 60, 103, 58]
      """
      return [m + mark for m in marks]
  
output:     return [m + mark for m in marks]