import sys

AUTHORS_FILE_NAME = ""
AFFILIATIONS_FILE_NAME = ""
AUTHOR_AFFILIATION_FILE_NAME = ""

authors_file = open(AUTHORS_FILE_NAME)
affiliations_file = open(AFFILIATIONS_FILE_NAME)
author_affiliation_file = open(AUTHOR_AFFILIATION_FILE_NAME)

for auth_aff_line in author_affiliation_file:
	try:
		author_id, affiliation_id = auth_aff_line.split("\t")
		for auth_line in authors_file:
			for aff_line in affiliations_file:
				try:
					auth_id, auth_name = auth_line.split("\t")
					aff_id, aff_name = aff_line.split("\t")
					if auth_id == author_id and aff_id == affiliation_id:
						print
				except e:
					sys.stderr.write("skipping extry")
	except e:
		sys.stderr.write("skipping line: %s" % auth_aff_line)

authors_file.close()
affiliations_file.close()
author_affiliation_file.close()