Codeforces Round #631 (div1 & div2)
Difference between en11 and en12, changed 2 character(s)
Hello, everyone! [Codeforces Round #631](https://codeforces.me/contests/1329,1330) will be held at [contest_time:1329].↵
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The problems are almost from me([user:dreamoon_love_AA,2020-04-01]), except one problem of which the idea is from [user:drazil,2020-04-01] and developed by me. Also we want to thank [user:300iq,2020-04-01] for helping me prepare the round, [user:isaf27,2020-04-01], [user:tmt514,2020-04-01], [user:rowdark,2020-04-01], [user:yp155136,2020-04-01], [user:wangyenjen,2020-04-01], [user:n_dao107,2020-04-01]  and [user:zj713300,2020-04-01] for testing this round, and MikeMirzayanov for Codeforces and Polygon.↵
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This is my third time organizing a problemset for a Codeforces round (my previous rounds: [Codeforces Round #2792](https://codeforces.me/contests/515,516), [Codeforces Round #320](https://codeforces.me/contests/578,579)).↵
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Good luck and have fun!

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en18 English dreamoon_love_AA 2020-04-05 20:07:10 661
en17 English dreamoon_love_AA 2020-04-04 12:34:59 73
en16 English dreamoon_love_AA 2020-04-03 17:27:35 100
en15 English dreamoon_love_AA 2020-04-03 17:01:35 76
en14 English MikeMirzayanov 2020-04-02 17:53:56 43 (published)
en13 English MikeMirzayanov 2020-04-02 17:52:39 555 (saved to drafts)
en12 English dreamoon_love_AA 2020-04-02 12:12:39 2 Tiny change: 's Round #272](https:/' -> 's Round #292](https:/'
en11 English dreamoon_love_AA 2020-04-01 21:26:48 0 (published)
en10 English dreamoon_love_AA 2020-04-01 20:05:41 47 Tiny change: '579)).\n\nScore distribution will be announced later.\n\nGood ' -> '579)).\n\nGood '
en9 English dreamoon_love_AA 2020-04-01 20:04:53 74
en8 English dreamoon_love_AA 2020-04-01 15:18:41 176
en7 English dreamoon_love_AA 2020-04-01 15:09:35 27 Tiny change: 'everyone! Codeforces Round #631 will be h' -> 'everyone! [contest:1329] will be h'
en6 English dreamoon_love_AA 2020-04-01 07:44:05 4 Tiny change: '20-04-01]). Except one ' -> '20-04-01]), except one '
en5 English dreamoon_love_AA 2020-04-01 07:43:33 5 Tiny change: '20-04-01] wing for testi' -> '20-04-01] for testi'
en4 English dreamoon_love_AA 2020-04-01 07:43:09 352
en3 English dreamoon_love_AA 2020-04-01 07:00:40 288
en2 English dreamoon_love_AA 2020-04-01 06:36:49 4 Tiny change: 'es Round #320 will be h' -> 'es Round #631 will be h'
en1 English dreamoon_love_AA 2020-04-01 06:36:30 109 Initial revision (saved to drafts)