#!/opt/local/bin/python # # See ../README.md # # # Run as: python ch-2.py < input-file # import fileinput import sys for line in fileinput . input (): a, b = map (lambda x: int (x), line . strip () . split ("/")) for i in range (2): if a < b: b = b - a else: a = a - b if a == 0 or b == 0: break sys . stdout . write ("{:}/{:} " . format (a, b)) print ("")