input: Write a function to add a given integer mark to each element in the provided list of marks. The function should take two parameters: marks (a list) and mark (an integer). The function should return a new list where each element in the original list has been increased by the mark.
  
  def add_marks(marks, mark):
   return [m + mark for m in marks]
  
  assert add_marks([87, 56, 99, 54], 4) == [91, 60, 103, 58]
  assert add_marks([50, 60, 70], 10) == [60, 70, 80]
  assert add_marks([10, 20, 30], 0) == [10, 20, 30]
  assert add_marks([45, 45, 45], -10) == [35, 35, 35]
  assert add_marks([], 5) == []
output: def add_marks(marks, mark):
   return [m + mark for m in marks]