input: 
  def add_marks(marks: List[int], mark: int) -> List[int]:
      """ Add the given mark to each value in the marks list.
  
      >>> add_marks([87, 56, 99, 54], 4)
      [91, 60, 103, 58]
      >>> add_marks([10, 20, 30], 10)
      [20, 30, 40]
      """
  
output:     return [x + mark for x in marks]