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Unofficial Editorial — Back to School '24
Contest hosted on DMOJ https://dmoj.ca/contest/bts24
You can solve each row independently of each other. Using window sums, you can count the number of A or B in any contiguous section of $$$K$$$ cells, and thus detect whether any player has an opposing player in front of them.
Time complexity: $$$O(NM)$$$
| Rev. | Язык | Кто | Когда | Δ | Комментарий | |
|---|---|---|---|---|---|---|
| en35 |
|
Spheniscine | 2025-05-02 09:19:15 | 4 | ||
| en34 |
|
Spheniscine | 2025-04-30 12:34:08 | 16 | Tiny change: 'tatement: At the time of answering' -> 'tatement: Before answering' | |
| en33 |
|
Spheniscine | 2025-04-30 12:32:30 | 10 | Tiny change: 'esent the statement:' -> 'esent the predicate/statement:' | |
| en32 |
|
Spheniscine | 2025-04-30 12:29:48 | 473 | Tiny change: 're $P(i) \implies P(i+1)$ i' -> 're $P(i) \Rightarrow P(i+1)$ i' | |
| en31 |
|
Spheniscine | 2025-04-11 08:12:12 | 6 | Tiny change: 'dent that first exceeds ' -> 'dent that exceeds ' | |
| en30 |
|
Spheniscine | 2025-04-11 07:28:48 | 53 | ||
| en29 |
|
Spheniscine | 2025-04-11 07:26:10 | 18 | ||
| en28 |
|
Spheniscine | 2025-04-11 07:22:51 | 74 | ||
| en27 |
|
Spheniscine | 2025-04-07 12:08:07 | 151 | Tiny change: '_i + 1}$, $S_{B_i} ' -> '_i + 1}$, the new difference is $S_{B_i} ' | |
| en26 |
|
Spheniscine | 2025-04-07 11:41:09 | 39 | ||
| en25 |
|
Spheniscine | 2025-04-07 11:39:51 | 238 | ||
| en24 |
|
Spheniscine | 2024-09-10 16:05:28 | 354 | Tiny change: 'find that answer.\n' -> 'find that one answer.\n' | |
| en23 |
|
Spheniscine | 2024-09-10 10:29:37 | 251 | Tiny change: '1, p_2) + ... + c(p_m, ' -> '1, p_2) + \hellip + c(p_m, ' | |
| en22 |
|
Spheniscine | 2024-09-10 08:56:35 | 108 | ||
| en21 |
|
Spheniscine | 2024-09-10 07:23:51 | 9 | Tiny change: 'e minimum index of a stud' -> 'e minimum position of a stud' | |
| en20 |
|
Spheniscine | 2024-09-10 07:22:27 | 6 | Tiny change: 'm $f(l+1, k)$ to $f(l, k)$, we use' -> 'm $f(l+1, \*)$ to $f(l, \*)$, we use' | |
| en19 |
|
Spheniscine | 2024-09-10 07:21:39 | 1 | Tiny change: 'rs for $f(*, k)$ whe' -> 'rs for $f(\*, k)$ whe' | |
| en18 |
|
Spheniscine | 2024-09-10 07:20:59 | 2 | Tiny change: 'r $f(l+1, *)$ to $f(l, *)$. Let's' -> 'r $f(l+1, \*)$ to $f(l, \*)$. Let's' | |
| en17 |
|
Spheniscine | 2024-09-10 07:20:30 | 4 | Tiny change: 'r $f(l+1, k)$ to $f(l, k)$. Let's ' -> 'r $f(l+1, *)$ to $f(l, *)$. Let's ' | |
| en16 |
|
Spheniscine | 2024-09-10 06:25:12 | 2 | Tiny change: '_i \leq A_i+1$, therefo' -> '_i \leq A_{i+1}$, therefo' | |
| en15 |
|
Spheniscine | 2024-09-10 06:23:24 | 247 | ||
| en14 |
|
Spheniscine | 2024-09-10 05:48:11 | 51 | ||
| en13 |
|
Spheniscine | 2024-09-10 05:43:57 | 7 | Tiny change: ' going up or down f' -> ' going up toward or down f' | |
| en12 |
|
Spheniscine | 2024-09-10 05:40:02 | 714 | (published) | |
| en11 |
|
Spheniscine | 2024-09-10 05:27:46 | 957 | Tiny change: 'node $v$ (*without* consideri' -> 'node $v$ (''without'' consideri' | |
| en10 |
|
Spheniscine | 2024-09-10 05:16:41 | 2 | Tiny change: ', or $\inf$ if there' -> ', or $\infty$ if there' | |
| en9 |
|
Spheniscine | 2024-09-10 05:15:08 | 3 | Tiny change: 'N\sqrt Q)$\n</spoile' -> 'N\sqrt Q)$.\n</spoile' | |
| en8 |
|
Spheniscine | 2024-09-10 05:14:51 | 1419 | Tiny change: ' + QN / X). By picki' -> ' + QN / X)$. By picki' | |
| en7 |
|
Spheniscine | 2024-09-10 04:58:52 | 1007 | Tiny change: '$R_{i, j} > R_{i+1, j' -> '$R_{i, j} < R_{i+1, j' | |
| en6 |
|
Spheniscine | 2024-09-10 04:43:55 | 438 | Tiny change: ' becomes\n```\n3 4' -> ' becomes\n\n```\n3 4' | |
| en5 |
|
Spheniscine | 2024-09-10 04:36:42 | 703 | ||
| en4 |
|
Spheniscine | 2024-09-10 04:29:00 | 359 | ||
| en3 |
|
Spheniscine | 2024-09-10 04:27:25 | 1255 | Tiny change: 'arepsilon$) of the $' -> 'arepsilon$, to preserve tiebreaking order) of the $' | |
| en2 |
|
Spheniscine | 2024-09-10 04:08:57 | 345 | ||
| en1 |
|
Spheniscine | 2024-09-10 04:04:11 | 126 | Initial revision (saved to drafts) |
| Название |
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