HDU4718 The LCIS on the Tree(LCT)】的更多相关文章

又是一枚LCT,写一发加深一下对LCT的理解.本题的坑爹之处就在于,它实在是太坑爹了.询问的是树路径上的最长连续上升的子串,考验的是怎么样去维护.一开始的想法是维护三个变量 ls,rs,mxl,分别表示左起最长上升,右末最长上升,以及总的最长上升,那么最长上升一定是可以在下面的条件下求到的, mxl=max(ch[0]->mxl,ch[1]->mxl) 以及 令temp=1 存一下左右区间的左右lval,rval, if val>ch[0]->rval temp+=ch[0]-&g…
The LCIS on the Tree Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 175    Accepted Submission(s): 40 Problem Description For a sequence S1, S2, ... , SN, and a pair of integers (i, j), if 1 <=…
The LCIS on the Tree Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 1615    Accepted Submission(s): 457 题目链接 https://vjudge.net/problem/UVA-12655 Problem Description For a sequence S1, S2, ...…
Problem Description For a sequence S1, S2, ... , SN, and a pair of integers (i, j), if 1 <= i <= j <= N and Si < Si+1 < Si+2 < ... < Sj-1 < Sj , then the sequence Si, Si+1, ... , Sj is a CIS(Continuous Increasing Subsequence). The…
Tree Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=93850#problem/F Description You are given a tree with N nodes which are numbered by integers 1..N. Each node is associated with an integer as the w…
转载请注明出处: http://www.cnblogs.com/fraud/          ——by fraud GCD Tree Time Limit: 5000/2500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 84    Accepted Submission(s): 38 Problem Description Teacher Mai has a graph w…
LCT.. -------------------------------------------------------------------------------- #include<cstdio> #include<cstring> #include<algorithm> #include<iostream>   #define rep( i , n ) for( int i = 0 ; i < n ; ++i ) #define clr(…
LCT...略麻烦... -------------------------------------------------------------------------------- #include<cstdio> #include<algorithm> #include<cstring> #include<iostream>    #define rep( i , n ) for( int i = 0 ; i < n ; ++i ) #defi…
昨天看了一天的lct..当然幸好最后看懂了(也许吧..) 论善良学长的重要性T_T,老司机带带我! 这题主要是删边的时候还要判断一下..蒟蒻一开始天真的以为存在的边才能删结果吃了一发wa... 事实是只要两个点之间联通就能断开了,管它有没有边....整个就一模板题.. 交上去后跑得很慢(记录类型的锅)..但还是很短?(请自行无视过长变量名) #include<cstdio> #include<math.h> #include<iostream> #include<…
前言: Link-Cut Tree简称LCT是解决动态树问题的一种数据结构,可以说是我见过功能最强大的一种树上数据结构了.在此与大家分享一下LCT的学习笔记.提示:前置知识点需要树链剖分和splay. 引例: 在讲LCT之前先来看一道题:给一棵树,每个点有一个点权,多次操作,操作包含1.修改路径上点权2.查询路径上点权和.这道题显然用树链剖分+线段树就能做,但现在再加两个操作:3.删除树上的一条边4.连接两个点,保证连接后的联通块是一棵树.树的形态发生了改变,树链剖分+线段树这种静态数据结构显然…