Codeforces Round #715 Editorial

Revision en10, by Ari, 2021-04-16 23:17:06

Note: I can't figure out how to place the tutorials inside spoilers. If someone is familiar with how CF spoilers work and can help I would really appreciate it. For now, be warned that the tutorials are visible by default (but everything else isn't)

UPD: I figured out how to use spoilers! Also added implementations for all problems.

Thanks for participating in our contest!

1509A - Average Height

Author: Kuroni
First solve: Nutella3001 at 00:01:02

Hint
Tutorial

Implementation

1509B - TMT Document

Author: Ari
First solve: blue at 00:04:51

Hint
Tutorial

Implementation

1509C - The Sports Festival

Author: Ari
First solve: Dukkha at 00:05:32

Hint 1
Hint 2
Tutorial

Implementation

1508A - Binary Literature

Author: Ari
First solve (Div. 2): traxex2 at 00:22:48
First solve (Div. 1): tourist at 00:05:04

Hint 1
Hint 2
Hint 3
Tutorial

Implementation

1508B - Almost Sorted

Author: Both of us!
First solve (Div. 2): shenmadongdong.qaq at 00:29:52
First solve (Div. 1): tourist at 00:08:19

Hint 1
Hint 2
Hint 3
Tutorial

Implementation

1508C - Complete the MST

Author: Kuroni
First solve (Div. 2): deepspacewaifu at 01:42:36
First solve (Div. 1): maroonrk at 00:33:17

Hint 1
Hint 2
Hint 3
Hint 4
Tutorial

Implementation

1508D - Swap Pass

Author: Ari
First solve: ksun48 at 00:57:13

Hint 1
Hint 2
Hint 3
Hint 4
Tutorial

Implementation

1508E - Tree Calendar

Author: Kuroni
First solve: ecnerwala at 01:02:26

Hint 1
Hint 2
Hint 3
Hint 4
Tutorial

Implementation

1508F - Optimal Encoding

Author: Kuroni
First solve: ecnerwala at 01:52:02 (The only contestant who solved this problem!)

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Tutorial

Implementation

Finally, here's some funny moments that happened while we were working on the round :)

Memes

#### History

Revisions

Rev. Lang. By When Δ Comment
en10 Ari 2021-04-16 23:17:06 1034 Tiny change: '"Tutorial" >\n<br>\n[tutori' -> '"Tutorial">\n[tutori'
en9 Ari 2021-04-16 21:57:32 17
en8 Ari 2021-04-16 20:34:40 0 (published)
en7 Ari 2021-04-16 20:33:09 679 Tiny change: '1-04-14]\n\nFirst so' -> '1-04-14]\n<br>\nFirst so'
en6 Ari 2021-04-16 20:19:57 831 Tiny change: 'orial" >\n\n[tutoria' -> 'orial" >\n[tutoria'
en5 Ari 2021-04-14 00:14:55 10
en4 Ari 2021-04-14 00:13:18 2 Tiny change: 'spoiler>\n\n<spoiler' -> 'spoiler>\n<spoiler'
en3 Ari 2021-04-14 00:05:07 72
en2 Ari 2021-04-14 00:02:09 5989 Tiny change: ' cooler!\n \nOne more' -> ' cooler!\n&nbsp\nOne more'
en1 Ari 2021-04-13 23:20:13 6419 Initial revision (saved to drafts)