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Codeforces Round #876 (Div. 2) Editorial
The first and last elements are always equal to $$$1$$$.
There are at least $$$\lceil \frac{n - 1}{k} \rceil$$$ ones among the first $$$n - 1$$$ elements.
Try to solve the problem if all $$$a_i$$$ are equal.
1839C - Insert Zero and Invert Prefix
After every operation, the last element of $$$b$$$ is equal to $$$0$$$.
If the last element of $$$a$$$ is $$$0$$$, then you can always achieve $$$b = a$$$ with some sequence of operations.
Try to solve the problem if $$$a$$$ consists of $$$k$$$ ones followed by single zero.
Rev. | Lang. | By | When | Δ | Comment | |
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ru3 | valerikk | 2023-06-03 20:11:15 | 0 | (опубликовано) | ||
ru2 | valerikk | 2023-06-03 20:10:56 | 1 | Мелкая правка: 'и первых $$n - 1$ эл' -> 'и первых $n - 1$ эл' | ||
ru1 | valerikk | 2023-06-03 20:10:05 | 2044 | Первая редакция перевода на Русский (сохранено в черновиках) | ||
en11 | valerikk | 2023-06-03 20:01:08 | 0 | (published) | ||
en10 | valerikk | 2023-06-03 19:56:50 | 2 | Tiny change: 'oiler>\n\n[probl' -> 'oiler>\n\n\n[probl' | ||
en9 | valerikk | 2023-06-03 19:54:30 | 17 | Tiny change: 'each round, connect ' -> 'each round of the game, connect ' | ||
en8 | valerikk | 2023-06-03 19:53:26 | 615 | |||
en7 | valerikk | 2023-06-03 19:47:24 | 45 | |||
en6 | valerikk | 2023-06-03 19:46:39 | 298 | |||
en5 | valerikk | 2023-06-03 19:43:25 | 46 | |||
en4 | valerikk | 2023-06-03 19:42:14 | 415 | |||
en3 | valerikk | 2023-06-03 19:39:38 | 172 | |||
en2 | valerikk | 2023-06-03 19:37:02 | 18 | |||
en1 | valerikk | 2023-06-03 19:36:22 | 371 | Initial revision (saved to drafts) |
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