NBUT1457 Sona 莫队算法

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NBUT1457 Sona 莫队算法

由于10^9很大,所以先离散化一下,把给你的这一段数哈希时间复杂度O(nlogn) 然后就是分块莫队已知[L,R],由于事先的离散化,可以在O(1)的的时间更新[l+1,r],[l,r+1],[l-1,r],[l,r-1]时间复杂度O(n*sqrt(n)): 代码如下,速度并不是很快(我比较喜欢手动的去重,unique一直没怎么用过) /*96655 's source code for B Memory: 3744 KB Time: 2968 MS Language: G++ Result…

NBUT 1457 Sona（莫队算法+离散化）

[1457] Sona 时间限制: 5000 ms 内存限制: 65535 K 问题描述 Sona, Maven of the Strings. Of cause, she can play the zither. Sona can't speak but she can make fancy music. Her music can attack, heal, encourage and enchant. There're an ancient score(乐谱). But because i…

NBUT 1457 莫队算法离散化

Sona Time Limit:5000MS Memory Limit:65535KB 64bit IO Format: Submit Status Practice NBUT 1457 Appoint description: Description Sona, Maven of the Strings. Of cause, she can play the zither. Sona can't speak but she can make fancy music. Her…

BZOJ 2038: [2009国家集训队]小Z的袜子(hose) [莫队算法]【学习笔记】

2038: [2009国家集训队]小Z的袜子(hose) Time Limit: 20 Sec Memory Limit: 259 MBSubmit: 7687 Solved: 3516[Submit][Status][Discuss] Description 作为一个生活散漫的人,小Z每天早上都要耗费很久从一堆五颜六色的袜子中找出一双来穿.终于有一天,小Z再也无法忍受这恼人的找袜子过程,于是他决定听天由命……具体来说,小Z把这N只袜子从1到N编号,然后从编号L到R(L 尽管小Z并不在意两只…

NPY and girls-HDU5145莫队算法

Time Limit: 8000/4000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description NPY's girlfriend blew him out!His honey doesn't love him any more!However, he has so many girlfriend candidates.Because there are too many girls and…

Codeforces617 E . XOR and Favorite Number(莫队算法)

XOR and Favorite Number time limit per test: 4 seconds memory limit per test: 256 megabytes input: standard input output: standard output Bob has a favorite number k and ai of length n. Now he asks you to answer m queries. Each query is given by a pa…

Bzoj 2038---[2009国家集训队]小Z的袜子(hose) 莫队算法

题目链接 http://www.lydsy.com/JudgeOnline/problem.php?id=2038 Description 作为一个生活散漫的人,小Z每天早上都要耗费很久从一堆五颜六色的袜子中找出一双来穿.终于有一天,小Z再也无法忍受这恼人的找袜子过程,于是他决定听天由命……具体来说,小Z把这N只袜子从1到N编号,然后从编号L到R(L 尽管小Z并不在意两只袜子是不是完整的一双,甚至不在意两只袜子是否一左一右,他却很在意袜子的颜色,毕竟穿两只不同色的袜子会很尴尬.你的任务便是告诉小…