zoj 3963 Heap Partition（并查集，贪心，二分）

【zoj 3963 Heap Partition（并查集，贪心，二分）】的更多相关文章

zoj 3963 Heap Partition（并查集，贪心，二分）

Heap Partition Time Limit: 2 Seconds Memory Limit: 65536 KB Special Judge A sequence S = {s1, s2, ..., sn} is called heapable if there exists a binary tree T with n nodes such that every node is labelled with exactly one element from the se…

ZOJ 3963 Heap Partition set维护。给一个序列，将其划分成尽量少的序列，使每一个序列满足按照顺序构造二叉树，父母的值<=孩子的值。

Heap Partition Time Limit: Seconds Memory Limit: KB Special Judge A sequence S = {s1, s2, ..., sn} is called heapable if there exists a binary tree T with n nodes such that every node is labelled with exactly one element from the sequence S, and for…

ZOJ 3963 Heap Partition（multiset + stl自带二分 + 贪心）题解

题意:给你n个数字s1~sn,要你把它们组成一棵棵二叉树,对这棵二叉树来说,所有节点来自S,并且父节点si<=子节点sj,并且i<j,问你树最少几棵二叉数.树思路:贪心.我们往multiset加还能加子节点的节点,二分查找一个个大于等于当前插入节点的节点,然后插入,若找不到则重新建一棵树. 没想到set自带lower_bound(),第一次迭代器遍历TLE就想着手动写二分...然后发现自带二分... 代码: #include<iostream> #include<stdio…

HDU 1598 find the most comfortable road 并查集+贪心

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1598 find the most comfortable road Time Limit: 1000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others) 问题描述 XX星有许多城市,城市之间通过一种奇怪的高速公路SARS(Super Air Roam Structure---超级空中漫游结构)进行交流,每条SARS都对行驶在…

[POJ2054]Color a Tree (并查集+贪心)

POJ终于修好啦题意和UVA1205是同一题,在洛谷上是紫题有一棵树,需要给其所有节点染色,每个点染色所需的时间是一样的都是11.给每个点染色,还有一个开销“当前时间×ci×ci”,cici是每个节点的一个权值.(当前时间是染完这个节点的时间) 染色还有另一个约束条件,要染一个点必须要先染好其父节点,所以第一个染的点是根节点. 求最小开销. 思路这道题显然对于每一个可选的子节点选最重的的贪心思路是错误的就有点类似动态规划了不过不DP也是可以贪心出来的.但是这个策略比较麻烦.大…

hdu 4424 & zoj 3659 Conquer a New Region (并查集 + 贪心)

Conquer a New Region Time Limit: 8000/4000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 657 Accepted Submission(s): 179 Problem Description The wheel of the history rolling forward, our king conquered a new region i…