Editorial of Pinely Round 3 (Div. 1 + Div. 2)

Revision en20, by TheScrasse, 2023-12-26 13:56:39

The official implementations of all the problems are here.

Timeline of the round proposal (may contain spoilers)

1909A - Distinct Buttons

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Solution

1909B - Make Almost Equal With Mod

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Solution

1909C - Heavy Intervals

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Solution

1909D - Split Plus K

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Solution

1909E - Multiple Lamps

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Hint 4
Solution

1909F1 - Small Permutation Problem (Easy Version), 1909F2 - Small Permutation Problem (Hard Version)

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Hint 4
Solution

1909G - Pumping Lemma

Author: TheScrasse
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Solution

1909H - Parallel Swaps Sort

Author: TheScrasse
Full solution: Endagorion, errorgorn
Preparation: TheScrasse, franv

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Hint 7
Hint 8
Hint 9
Hint 10
Hint 11
Hint 12
Solution

1909I - Short Permutation Problem

Author: TheScrasse
Full solution: errorgorn
Preparation: TheScrasse

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Solution
Tags tutorial

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en21 English TheScrasse 2023-12-27 21:09:57 132 Tiny change: 'es after every operation, and it i' -> 'es after each step, and it i'
en20 English TheScrasse 2023-12-26 13:56:39 4
en19 English TheScrasse 2023-12-25 14:37:37 1 Tiny change: 'em:1909F1], the shape' -> 'em:1909F1] the shape'
en18 English TheScrasse 2023-12-24 19:54:05 18
en17 English TheScrasse 2023-12-24 12:41:01 5 Tiny change: 'n \rfloor < \lfloor n' -> 'n \rfloor \leq \lfloor n'
en16 English TheScrasse 2023-12-24 00:02:45 25 Tiny change: '023-12-21]\n\n<spoi' -> '023-12-21], [user:franv]\n\n<spoi'
en15 English TheScrasse 2023-12-23 21:10:26 41 Tiny change: 'ilers)">\n- Feb 19' -> 'ilers)">\n(problems D', H', etc. were not used)\n- Feb 19'
en14 English TheScrasse 2023-12-23 21:01:15 2317 Tiny change: ' the round">\n- Feb ' -> ' the round proposal (may contain spoilers)">\n- Feb '
en13 English TheScrasse 2023-12-23 20:44:11 1 Tiny change: 'The offici' -> '[problemThe offici' (published)
en12 English TheScrasse 2023-12-23 14:16:11 2
en11 English TheScrasse 2023-12-23 14:10:58 25
en10 English TheScrasse 2023-12-23 14:07:24 115
en9 English TheScrasse 2023-12-23 13:51:07 166
en8 English TheScrasse 2023-12-21 21:02:03 2
en7 English TheScrasse 2023-12-21 20:58:16 512
en6 English TheScrasse 2023-12-21 20:50:57 72
en5 English TheScrasse 2023-12-21 20:49:46 299
en4 English TheScrasse 2023-12-21 20:47:13 121
en3 English TheScrasse 2023-12-21 20:45:36 75 Tiny change: 'steps.\n\nNow, y' -> 'steps.\n\n![ ](https://mirror.codeforces.com/71cb50/f4.png)\n\nNow, y'
en2 English TheScrasse 2023-12-21 20:43:44 158
en1 English TheScrasse 2023-12-21 20:41:26 21411 Initial revision (saved to drafts)