Unoficial Div 4 Round #2 Editorial

Revision en10, by ssense, 2020-11-25 19:07:51

This is the editorial for the Unofficial Div 4 Round #2 created by I_Love_YrNameCouldBeHere and ssense.

We hope everyone had fun and enjoyed the contest!

Problem A — Catching the Impostor.

Tutorial
Solution

Problem C — Similar Arrays

Tutorial
Solution

Problem D — Sanda's Job

Tutorial
Solution

Problem E — Count Substrings

Tutorial
Solution

Problem F — Game on Grid

Tutorial
Solution 1
Solution 2

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en18 English I_Love_YrNameCouldBeHere 2020-11-26 23:09:03 84 Tiny change: ' Editorial for the problems](https://' -> ' Editorial](https://'
en17 English I_Love_YrNameCouldBeHere 2020-11-26 00:41:29 1
en16 English ssense 2020-11-25 23:05:22 884
en15 English I_Love_YrNameCouldBeHere 2020-11-25 19:56:56 510
en14 English I_Love_YrNameCouldBeHere 2020-11-25 19:51:53 116
en13 English I_Love_YrNameCouldBeHere 2020-11-25 19:48:14 323 Tiny change: 'wing.\n\n<a href="https://ibb.co/fQsCdCZ%22%3E<img src="' -> 'wing.\n\n<img src="' (published)
en12 English I_Love_YrNameCouldBeHere 2020-11-25 19:26:32 116 Tiny change: 'is problem\n\nProble' -> 'is problem.\n\nProble'
en11 English ssense 2020-11-25 19:18:38 691
en10 English ssense 2020-11-25 19:07:51 72 Reverted to en8
en9 English I_Love_YrNameCouldBeHere 2020-11-25 18:58:37 72
en8 English I_Love_YrNameCouldBeHere 2020-11-25 18:55:25 30 Tiny change: ' can find cases dep' -> ' can find the answer by looking at the cases dep'
en7 English I_Love_YrNameCouldBeHere 2020-11-25 18:50:43 2638 Tiny change: 'from $1$. Let \textit{even cell} denote a ' -> 'from $1$. _Let even cell_ denote a '
en6 English I_Love_YrNameCouldBeHere 2020-11-16 19:56:56 21 Tiny change: ' larger then the medi' -> ' larger than the medi'
en5 English I_Love_YrNameCouldBeHere 2020-11-16 18:58:06 9199 Tiny change: '$ $2$ $=$ 0 it is a d' -> '$ $2$ $=$ $0$ it is a d'
en4 English I_Love_YrNameCouldBeHere 2020-11-16 17:37:59 1142
en3 English I_Love_YrNameCouldBeHere 2020-10-30 12:45:45 31 Tiny change: ' it would change by $x$.\nThe sam' -> ' it would become greater.\nThe sam'
en2 English ssense 2020-10-30 00:56:04 912
en1 English I_Love_YrNameCouldBeHere 2020-10-30 00:43:10 2525 Initial revision (saved to drafts)