Spy's Work Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1266    Accepted Submission(s): 388 Problem Description I'm a manager of a large trading company, called ACM, and responsible for the…

Spy's Work Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1324    Accepted Submission(s): 415 Problem Description I'm a manager of a large trading company, called ACM, and responsible for the…

给定N个点,每个点都有一个唯一的前驱结点(点1为大boss),每个点的实际权值是子节点的求和值.现在给出某些点的权值的估算(> , = , < ),问这些估算是否会有冲突,现在保证每个点的权值是大于等于1的. 分析: 判断标准为每个点的上下界,初始化为INF和1,每个点上下界可以根据给出的信息,或者搜索出的信息进行更新,如果出现上界小于下界的情况就说明矛盾了. 计算过程中数据量竟然没有超过int................ #include <cstdio> #include…

题意 给定一棵树,给出一些子树的权值关系,问是否矛盾(初始所有结点的下限为1) 思路 设lmin和lmax表示题目给定的限制范围,默认为[1..oo]:amin和amax表示实际符合要求的范围.从根节点开始DP,通过子树的amin更新父节点的amin(父节点的amax一定是oo,因为它自身权值任意),判断此时amin和amax与lmin和lmax是否有交集(实际范围),没有则false. 代码 [cpp] #include <iostream> #include <cstdio>…

题意: 给定一棵树,每个节点代表一个员工,节点编号小的级别就小,那么点1就是boss了.接下来给出对m个点的限制,有3种符号分别是op=“大于/小于/等于”,表示以第i个点为根的子树所有人的工资之和 大于/小于/等于 x,要求判断m个限制是否冲突了.注意每个员工的工资下限是1,而无上限.ps:可能出现对同个点多个限制,注意取交集. 思路: 很水的题嘛,想复杂了.注意限制是针对整棵子树的!所以我们只需要算出这棵子树的范围,再判断是否和所给的限制有冲突,如果没有冲突的话还得取“所给限制”与“计算出的…

pid=3966" target="_blank" style="">题目链接:hdu 3966 Aragorn's Story 题目大意:给定一个棵树,然后三种操作 Q x:查询节点x的值 I x y w:节点x到y这条路径上全部节点的值添加w D x y w:节点x到y这条路径上全部节点的值降低w 解题思路:树链剖分,用树状数组维护每一个节点的值. #pragma comment(linker, "/STACK:1024000000,1…

HDU Aragorn's Story 题目链接 树抛入门裸题,这题是区间改动单点查询,于是套树状数组就OK了 代码: #include <cstdio> #include <cstring> #include <vector> #include <algorithm> using namespace std; const int N = 50005; inline int lowbit(int x) {return x&(-x);} int dep…

题链:http://acm.hdu.edu.cn/showproblem.php?pid=5282 Senior's String Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 142    Accepted Submission(s): 40 Problem Description Xuejiejie loves strings m…

主题链接:http://acm.hdu.edu.cn/showproblem.php? pid=3177 Problem Description Crixalis - Sand King used to be a giant scorpion(蝎子) in the deserts of Kalimdor. Though he's a guardian of Lich King now, he keeps the living habit of a scorpion like living und…

zhx's submissions Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 540    Accepted Submission(s): 146 Problem Description As one of the most powerful brushes, zhx submits a lot of code on many o…