Agc005d
Web题意翻译. 如果一个排列 P P 满足对于所有的 i i 都有 P_i-i \neq k ∣P i −i∣ = k ，则称排列 P P 为合法的。. 现给出 n n 和 k k ，求有多少种合法的排列。. 由于答案很大,请输出答案对 924844033 924844033 取模的结果。. 【数据范围】. 2\leq n\leq 2\times 10^3 2 ≤ … WebAGC005D do the topic experience. tags: atcoder structure answer . Question link I think it is a good topic again, maybe my food. Judgment can be solved. First assume that we have got it \(a\) and \(b\) How can we judge whether there is a solution for these two sequences.
Agc005d
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WebApr 10, 2024 · [AGC005D] ~K Perm Counting. 我又学到一个新 trick. 我们在遇到排列相关问题时可以看成在一个 \(n\times n\) 的棋盘上放 \(n\) 个中国象棋里的车（国际象棋我不会，别问我），使得他们互不攻击。 这就对应了两辆车不能在同一行或同一列，正好对应了排列的 … WebProblem link: AGC005D You can use DP to solve this problem in O(NK). This code got AC when N<=2000 and K<=N-1. DP Solution (29ms) Here is the editorial: Editorial After I …
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WebAGC005D - ~K Perm Counting Solution. The classic numbers are numbered, and a big hassle is written. Direct rendering, consider seeking f i f_i f i Say i i i Position ∣ p i − i ∣ = k p_i-i =k ∣ p i − i ∣ = k Solution number. WebAT2062 [AGC005D] ~K Perm Counting AT2376 [AGC014D] Black and White Tree AT2675 [AGC018F] Two Trees AT2689 [ARC080D] Prime Flip AT2705 [AGC019F] Yes or No AT4505 [AGC029F] Construction of a tree AT5203 [AGC038F] Two Permutations 0 stars 1 watching 0 forks No releases published No packages published
Problem link: AGC005D You can use DP to solve this problem in O(NK). This code got AC when N<=2000 and K<=N-1. DP Solution (29ms) Here is the editorial: Editorial After I read the editorial, which explains the DP solution, I found this line below: おまけ: 以上の考察をもう少し進めると、この問題は O (NlogN) で解くことが出来ます。
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