



'''simple docstring'''



from __future__ import annotations



def       UpperCAmelCase__ (     UpperCAmelCase_   :    list[int]							)					->		list[int]:
     __lowerCamelCase       :     str        =		[0] * len(UpperCAmelCase_							)
     for i in range(1				,   len(UpperCAmelCase_							)							):
          __lowerCamelCase       :     Optional[Any]        =		duration_times[i - 1] + waiting_times[i - 1]
     return waiting_times



def       UpperCAmelCase__ (     UpperCAmelCase_   :    list[int]				,   UpperCAmelCase_   :    list[int]							)					->		list[int]:
     return [
         duration_time + waiting_times[i]
         for i, duration_time in enumerate(UpperCAmelCase_							)
     ]



def       UpperCAmelCase__ (     UpperCAmelCase_   :    list[int]							)					->		float:
     return sum(UpperCAmelCase_							) / len(UpperCAmelCase_							)



def       UpperCAmelCase__ (     UpperCAmelCase_   :    list[int]							)					->		float:
     return sum(UpperCAmelCase_							) / len(UpperCAmelCase_							)


if __name__ == "__main__":
      # process id's
      A__		: Union[str, Any]												=  [1, 2, 3]

      # ensure that we actually have processes
      if len(processes) == 0:
            print("""Zero amount of processes""")
            raise SystemExit(0)

      # duration time of all processes
      A__		: List[str]												=  [19, 8, 9]

      # ensure we can match each id to a duration time
      if len(duration_times) != len(processes):
            print("""Unable to match all id's with their duration time""")
            raise SystemExit(0)

      # get the waiting times and the turnaround times
      A__		: Tuple												=  calculate_waiting_times(duration_times)
      A__		: Optional[int]												=  calculate_turnaround_times(duration_times, waiting_times)

      # get the average times
      A__		: List[str]												=  calculate_average_waiting_time(waiting_times)
      A__		: int												=  calculate_average_turnaround_time(turnaround_times)

      # print all the results
      print("""Process ID\tDuration Time\tWaiting Time\tTurnaround Time""")
      for i, process in enumerate(processes):
            print(
                f'''{process}\t\t{duration_times[i]}\t\t{waiting_times[i]}\t\t'''
                f'''{turnaround_times[i]}'''
            )
      print(f'''Average waiting time = {average_waiting_time}''')
      print(f'''Average turn around time = {average_turnaround_time}''')










'''simple docstring'''



def       UpperCAmelCase__ (     UpperCAmelCase_   :    int = 4_00_00_00							)					->		int:
     __lowerCamelCase       :     int        =		1
     __lowerCamelCase       :     Union[str, Any]        =		2
     __lowerCamelCase       :     Optional[int]        =		0
     while j <= n:
          if j % 2 == 0:
               total += j
          __lowerCamelCase    ,	__lowerCamelCase       :     List[Any]        =		j, i + j

     return total


if __name__ == "__main__":
      print(f'''{solution() = }''')






