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Jun 17, 2020 at 8:22 history edited CommunityBot
Commonmark migration
Jun 3, 2019 at 6:44 comment added Peregrine Rook (1) You even said that you would wait three days before posting your answer.  (2) Stojan Samojlovski got the right answer, with logic that’s mathematically equivalent to yours, and your explanation isn’t really much simpler or neater.  You should have just accepted their answer.   (For that matter, Ak19 pretty much got it right, also, but their explanation is very unclear.)
May 18, 2019 at 14:14 vote accept LETTERKING
May 17, 2019 at 10:27 comment added LETTERKING Okay, I get it! Next time I will give a hint first. I am still new here sorry...
May 17, 2019 at 9:58 comment added Rubio (It is generally nicer to give a solver some hints and some time to let them come up with the intended full solution themselves; if their answer is substantially close, you might instead annotate their final solution with, e.g., "Added by OP" notes that fill in missing or incorrect details. Having said that, in this case it's rather hard to argue how the answer offered by @Stojan Samojlovski is in any way lacking; it has the intended answer via a well justified mechanism that is ultimately equivalent to the method your own answer describes.)
May 17, 2019 at 5:31 history answered LETTERKING CC BY-SA 4.0