Codeforces Round #460 (Div. 2) Editorial

#	User	Rating
1	tourist	3993
2	jiangly	3743
3	orzdevinwang	3707
4	Radewoosh	3627
5	jqdai0815	3620
6	Benq	3564
7	Kevin114514	3443
8	ksun48	3434
9	Rewinding	3397
10	Um_nik	3396

#	User	Contrib.
1	cry	167
2	Um_nik	163
3	maomao90	162
3	atcoder_official	162
5	adamant	159
6	-is-this-fft-	158
7	awoo	155
8	TheScrasse	154
9	Dominater069	153
10	nor	152

[tutorial:919A]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34803~~97612) (C++ version)↵
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[tutorial:919B]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34836~~97624) (C++ version)↵
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[Code](http://codeforces.me/contest/919/submission/347~~34845~~97628) (Python version)↵
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[tutorial:919C]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34870~~97644) (C++ version)↵
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[Code](http://codeforces.me/contest/919/submission/347~~34909~~97654) (Python version)↵
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[tutorial:919D]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34932~~97673) (C++ version)↵
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[tutorial:919E]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34971~~97680) (C++ version)↵
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[tutorial:919F]↵
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[Code](http://codeforces.me/contest/919/submission/347~~34992~~97700) (My stupid solution: C++ version)↵
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[Code](http://codeforces.me/contest/919/submission/34797~~525~~694) ([user:demon1999,2018-02-01]'s fast solution: C++11 version)↵
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**UPD1:** Note that the editorial of problem E is modified with some correction. Sorry for that inconvenience.↵
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**UPD2:** The editorial is complete now. Hope you find it useful. :P

Rev.	By	When	Δ	Comment
en13	jinlifu1999	2018-02-02 11:26:02	39	Tiny change: 'upvote. :P' -> 'upvote. :P\n\nUPD4: The editorial is updated.'
en12	jinlifu1999	2018-02-01 12:59:04	124
en11	jinlifu1999	2018-02-01 12:53:35	68
en10	jinlifu1999	2018-02-01 12:46:24	794
en9	jinlifu1999	2018-02-01 12:38:39	188
en8	jinlifu1999	2018-02-01 08:18:00	112
en7	jinlifu1999	2018-01-31 19:45:13	0	(published)
en6	jinlifu1999	2018-01-31 19:05:28	53	Tiny change: 'al:919E]\n\nHope you like these problems. See you next time. :P' -> 'al:919E]\n'
en5	jinlifu1999	2018-01-31 19:03:39	10
en4	jinlifu1999	2018-01-31 19:02:24	10	Tiny change: 'problem F will be p' -> 'problem F and codes will be p'
en3	jinlifu1999	2018-01-31 18:50:59	95
en2	jinlifu1999	2018-01-31 18:50:40	233
en1	jinlifu1999	2018-01-31 18:39:12	125	Initial revision (saved to drafts)

History