题目大意:有$n$个点,每个点有一个距离(从小到大给出),从第$i$个点跳一次,会跳到距离第$i$个点第$k$远的点上(若有两个点都是第$k$远,就跳到编号小的上).问对于从每个点开始跳,跳$m$次,最后会到哪个点 题解:难点主要在处理第$k$远上(跳只需要一个类似快速幂的东西就好了,也就是倍增). 可以维护两个指针,一个是$l$,一个是$r(r=l+k)$,且到$i$这个点时$l\leqslant i\leqslant r$.刚开始时$l=1,r=k+1$,若$p_{r+1}-p_i<p_i-…

洛谷P3502 [POI2010]CHO-Hamsters感想及题解(图论+字符串+矩阵加速\(dp\&Floyd\)) 标签:题解 阅读体验:https://zybuluo.com/Junlier/note/1310683 扯闲谈 觉得这是道比较好的引导模型转换的题,就决定写一篇题解 即使我就是看的ZSY的,并且几乎写的一模一样(还是稍有不同的) 安利一发租酥雨的题解 原题地址:洛谷P3502 [POI2010]CHO-Hamsters 先理解题意 给出\(n\)个字符串,让你用这\(n\)个…

洛谷题目链接:[POI2010]ANT-Antisymmetry 题目描述 Byteasar studies certain strings of zeroes and ones. Let be such a string. By we will denote the reversed (i.e., "read backwards") string , and by we will denote the string obtained from by changing all the…

题目 首先分析数据范围发现m很大,所以线性做法肯定不行,因此考虑倍增,即预处理出每个点跳1次后的位置.然后只用两个数组类似于快速幂,推出每个点跳m次后的位置. 预处理离每个点第k小的点,可以用长度为k的尺子尺取. #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <queue> #define int long long #…

P3496 [POI2010]GIL-Guilds 题目描述 King Byteasar faces a serious matter. Two competing trade organisations, The Tailors Guild and The Sewers Guild asked, at the same time, for permissions to open their offices in each town of the kingdom. There are  town…

P3507 [POI2010]GRA-The Minima Game 题目描述 Alice and Bob learned the minima game, which they like very much, recently. The rules of the game are as follows. A certain number of cards lies on a table, each inscribed with a positive integer. The players m…

P3505 [POI2010]TEL-Teleportation 题目描述 King Byteasar is the ruler of the whole solar system that contains  planets. This number is so large that people have abandoned the silly custom of naming the planets and use numbers instead. The planets are thus…

    这是一道字符串建模+图论的问题. 题目描述 Byteasar breeds hamsters. Each hamster has a unique name, consisting of lower case letters of the English alphabet. The hamsters have a vast and comfortable cage. Byteasar intends to place a display under the cage to visuali…

题目描述 Alice and Bob learned the minima game, which they like very much, recently. The rules of the game are as follows. A certain number of cards lies on a table, each inscribed with a positive integer. The players make alternate moves, Alice making t…

题目链接: 传送门走这里 题目分析: 感觉不是很难啊--不像是蓝题(AC量也不像)恶意评分? 少打了一个+1调了半天,就这样居然还能过60pts?我思路和题解第一篇高度重合是什么鬼啊,太过分了吧本来还想水篇题解的 单调队列分别维护序列最大值和最小值,如果极差\(>k\)的话就扔掉最大值和最小值里面靠前的那一个,因为你不能不改动这个连续子序列的左端点而从中间丢掉一个值.同时记录下这个序列的左端点\(last_l\)是扔掉的那个值的编号+1(只要丢掉这个值,剩下的序列就合法了),丢完之后更新\(an…