BZOJ2408 混乱的置换

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BZOJ2408 混乱的置换

这道题即THUSC 2015 t3...只不过数据范围$n, m ≤ 10^5$ 可以上网查这个鬼畜的东西"Burrows-Wheeler Transform" 这道题要用到解压缩也就是IBWT算法,复杂度$O(n + m)$ /************************************************************** Problem: 2408 User: rausen Language: C++ Result: Accepted Time:24 m…

bzoj AC倒序

Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…

【做题】agc016d - XOR Replace——序列置换&环

原文链接 https://www.cnblogs.com/cly-none/p/9813163.html 题意:给出初始序列$a$和目标序列$b$,都有$n$个元素.每次操作可以把$a$中的一个元素替换为$a$中所有元素的异或和,问最少操作多少次,把序列$a$变成序列$b$,或判断无解. $n \leq 10^5$ 首先,这个"替换为所有元素的异或和",其实就是一开始有$v$为$a$中所有元素异或和,每次操作把$a$中某个元素与$v$交换…

[LeetCode] LFU Cache 最近最不常用页面置换缓存器

Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: get and put. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.pu…

[LeetCode] Longest Repeating Character Replacement 最长重复字符置换

Given a string that consists of only uppercase English letters, you can replace any letter in the string with another letter at most k times. Find the length of a longest substring containing all repeating letters you can get after performing the abo…