EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial

Revision en20, by Flamire, 2024-08-15 11:01:37

2002A — Distanced Coloring

idea & solution: xcyle

Hint 1
Hint 2
Tutorial
Solution

2002B — Removals Game

idea & solution: xcyle

Hint
Tutorial
Solution

2002C — Black Circles

idea: Flamire, solution: le0n

Hint
Tutorial
Solution

2002D1 — DFS Checker (Easy Version) and 2002D2 — DFS Checker (Hard Version)

idea & solution: xcyle

Hint
Tutorial
Solution (Check 1)
Solution (Check 2, LipArcanjo)

2002E — Cosmic Rays

idea: le0n, solution: Flamire

Hint 1
Hint 2
Tutorial
Solution
Solution (priority_queue)

2002F1 — Court Blue (Easy Version)

idea: Flamire, solution: le0n

Hint 1
Hint 2
Tutorial
Solution

2002F2 — Court Blue (Hard Version)

idea: le0n, solution: xcyle

Hint
Hint (alternate version)
Tutorial
Solution
Solution (dfs)

2002G — Lattice Optimizing

idea & solution: xcyle

We apologize for unintended solutions passing, and intended solutions failing with large constants. Brute force runs very fast on $$$n=18$$$, which forced us to increase constraints.

Hint 1
Hint 2
Tutorial
Solution
Solution (trie, LipArcanjo)

2002H — Counting 101

idea: le0n, xcyle, solution: le0n, xcyle

Hint 1
Hint 2
Hint 3
Tutorial
Solution (orzdevinwang)

History

 
 
 
 
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  Rev. Lang. By When Δ Comment
en20 English Flamire 2024-08-15 11:01:37 98
en19 English Flamire 2024-08-14 08:31:16 485
en18 English Flamire 2024-08-14 03:23:17 287
en17 English Flamire 2024-08-13 08:03:22 10
en16 English Flamire 2024-08-13 05:32:53 116
en15 English Flamire 2024-08-13 03:37:10 39
en14 English Flamire 2024-08-12 18:35:00 10551
en13 English Flamire 2024-08-12 13:11:58 4
en12 English Flamire 2024-08-12 10:13:10 130 Tiny change: 'oal.\n\n![](https://' -> 'oal.\n\n![ ](https://'
en11 English Flamire 2024-08-12 10:08:16 58
en10 English Flamire 2024-08-12 06:23:21 2
en9 English Flamire 2024-08-12 06:05:34 37990
en8 English Flamire 2024-08-12 05:44:27 56
en7 English Flamire 2024-08-12 05:43:42 53
en6 English Flamire 2024-08-12 05:40:13 1 Tiny change: '024-08-12] solution:' -> '024-08-12], solution:'
en5 English Flamire 2024-08-12 05:39:48 3
en4 English Flamire 2024-08-12 05:35:35 0 (published)
en3 English Flamire 2024-08-12 05:34:23 4 Tiny change: 'c43n})$.\n</spoile' -> 'c43n})$.\n\n\n</spoile'
en2 English Flamire 2024-08-12 05:18:15 95
en1 English Flamire 2024-08-12 05:17:01 12686 Initial revision (saved to drafts)