
"""simple docstring"""


from __future__ import annotations






def  _snake_case			(						snake_case__				:       list[int]       ):
	A :    Tuple  				=				[0] * len(snake_case__       )
	for i in range(1		, len(snake_case__       )       ):
		A :    Dict  				=				duration_times[i - 1] + waiting_times[i - 1]
	return waiting_times






def  _snake_case			(						snake_case__				:       list[int]		, snake_case__				:       list[int]       ):
	return [
	    duration_time + waiting_times[i]
	    for i, duration_time in enumerate(snake_case__       )
	]






def  _snake_case			(						snake_case__				:       list[int]       ):
	return sum(snake_case__       ) / len(snake_case__       )






def  _snake_case			(						snake_case__				:       list[int]       ):
	return sum(snake_case__       ) / len(snake_case__       )


if __name__ == "__main__":
		# process id's
		_lowercase											=			[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
		_lowercase											=			[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
		_lowercase											=			calculate_waiting_times(duration_times)
		_lowercase											=			calculate_turnaround_times(duration_times, waiting_times)

		# get the average times
		_lowercase											=			calculate_average_waiting_time(waiting_times)
		_lowercase											=			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"""


from __future__ import annotations






def  _snake_case			(						snake_case__				:       list[list[int]]		, snake_case__				:       list[list[int]]       ):
	assert len(snake_case__       ) == len(snake_case__       )

	A  				=				len(snake_case__       )
	A  				=				list(range(snake_case__       )       )
	A  				=				[-1] * n  # who the donor has donated to
	A  				=				[-1] * n  # who the recipient has received from
	A  				=				[0] * n

	while unmatched_donors:
		A  				=				unmatched_donors[0]
		A  				=				donor_pref[donor]
		A  				=				donor_preference[num_donations[donor]]
		num_donations[donor] += 1
		A  				=				recipient_pref[recipient]
		A  				=				rec_record[recipient]

		if prev_donor != -1:
			if rec_preference.index(snake_case__       ) > rec_preference.index(snake_case__       ):
				A  				=				donor
				A  				=				recipient
				unmatched_donors.append(snake_case__       )
				unmatched_donors.remove(snake_case__       )
		else:
			A  				=				donor
			A  				=				recipient
			unmatched_donors.remove(snake_case__       )
	return donor_record