Annoying problem Time Limit: 16000/8000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1006    Accepted Submission(s): 330 Problem Description Coco has a tree, whose nodes are conveniently labeled by 1,2,…,n, which…

Annoying problem Time Limit: 16000/8000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 203    Accepted Submission(s): 60 Problem Description Coco has a tree, whose nodes are conveniently labeled by 1,2,-,n, which h…

题解链接 Annoying problem Time Limit: 16000/8000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 480    Accepted Submission(s): 146 Problem Description Coco has a tree, whose nodes are conveniently labeled by 1,2,-,n, w…

Annoying problem 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5296 Description Coco has a tree, whose nodes are conveniently labeled by 1,2,-,n, which has n-1 edge,each edge has a weight. An existing set S is initially empty. Now there are two kin…

题意: 给一棵n个节点的树,再给q个操作,初始集合S为空,每个操作要在一个集合S中删除或增加某些点,输出每次操作后:要使得集合中任意两点互可达所耗最小需要多少权值.(记住只能利用原来给的树边.给的树边已经有向.10万个点,10万个操作) 思路:只能用 O(nlogn)的复杂度.官方题解: 重点也就是要找到集合S中的以x和y为端点一条链,使得操作点u到达这条链是最近的.删除也是这样,找到这条链,删除u到这链的路长. 步骤: (1)记录从根遍历的DFS序. (2)计算每个点到根的路径所经过边的权之和…

Annoying problem Problem Description Coco has a tree, whose nodes are conveniently labeled by 1,2,…,n, which has n-1 edge,each edge has a weight. An existing set S is initially empty.Now there are two kinds of operation: 1 x: If the node x is not in…

tree Time Limit: 8000ms Memory Limit: 262144KB This problem will be judged on HDU. Original ID: 539064-bit integer IO format: %I64d      Java class name: Main   Given a rooted tree(node 1 is the root) with n nodes. The ithnode has a positive value vi…

Yu-Gi-Oh! Time Limit: 2000ms Memory Limit: 65536KB This problem will be judged on HDU. Original ID: 538364-bit integer IO format: %I64d      Java class name: Main   "Yu-Gi-Oh!", also known as "Dueling Monsters", is a popular trading ca…

The path Time Limit: 2000ms Memory Limit: 65536KB This problem will be judged on HDU. Original ID: 538564-bit integer IO format: %I64d      Java class name: Main Special Judge   You have a connected directed graph.Let d(x) be the length of the shorte…

Boring Class Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 900    Accepted Submission(s): 247 Problem Description Mr. Zstu and Mr. Hdu are taking a boring class , Mr. Zstu comes up with a prob…