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when toggle format what by license comment
Feb 24, 2018 at 22:08 history edited Raphael CC BY-SA 3.0
added 179 characters in body
Apr 13, 2017 at 12:48 history edited CommunityBot
replaced http://cs.stackexchange.com/ with https://cs.stackexchange.com/
Apr 24, 2015 at 7:02 comment added Raphael This answer was written (with the help of a friend) independently of Yuval's. I notice that it is basically equivalent; I post it anyways since I think notation and detail differ enough for this to be of additional use to someone.
Apr 24, 2015 at 7:00 history answered Raphael CC BY-SA 3.0