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Jul 18, 2016 at 11:59 comment added Roel Schroeven @Scripting.FileSystemObject The big difference is: for each line in f.txt, your code loops over all elements in paid; the solution code instead does a lookup in paid (which is a set there); that is much faster.
Jul 18, 2016 at 9:00 vote accept Rahul Patel
Jul 18, 2016 at 8:53 comment added Rahul Patel What? Are you kidding? 0:00:14.917000 compared to 0:11:05.542505? How? looks like same code to me. really amazed.
Jul 18, 2016 at 6:51 history answered 200_success CC BY-SA 3.0