Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 12276 Accepted: 3886 Description Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and v. Give an…
#include <iostream> #include <stdio.h> #include <string.h> #include <algorithm> #define N 40005 #define M 80005 #define LL long long using namespace std; const int INF = 0x3f3f3f3f; int ver[M],edge[M],head[N],Next[M]; int n,m,tot,r…
［抄题］: We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node. The answer can be returned in any order. Example 1: Input: root = [3…
POJ1741:Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 29574 Accepted: 9915 Description Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and v. …
Distance on the tree DSM(Data Structure Master) once learned about tree when he was preparing for NOIP(National Olympiad in Informatics in Provinces) in Senior High School. So when in Data Structure Class in College, he is always absent-minded about…
题目链接:http://poj.org/problem?id=2631 Description Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such that there is only one route from a village to a village that does…
id=3140">[POJ 3140] Contestants Division(树型dp) Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 9121 Accepted: 2623 Description In the new ACM-ICPC Regional Contest, a special monitoring and submitting system will be set up, and stud…
[POJ 2486] Apple Tree(树型dp) Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8981 Accepted: 2990 Description Wshxzt is a lovely girl. She likes apple very much. One day HX takes her to an apple tree. There are N nodes in the tree. Each…
其实已经准备退役了,但GDOI之前还是会继续学下去的!!当成兴趣在学,已经对竞赛失去信心了的样子,我还是回去跪跪文化课吧QAQ 第一道环套树DP...其实思想挺简单的,就把环拆开,分类处理.若拆成开的两个点是u,v,dp[i,0..1]分别表示第i位骑士不选和选 (1) 不选u,v点随意 (2)u随意,v点不选... 分类dp处理即可 ; type edgetype=record toward,next:longint; end; var edge:..maxn*] of edgetype…
D - A Lot of Games CF#260 Div2 D题 CF#260 Div1 B题 Codeforces Round #260 CF455B D. A Lot of Games time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Andrew, Fedor and Alex are inventive guys. No…
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6058 Accepted Submission(s): 2743 Problem Description There is going to be a party to celebrate the 80-th Anniversary of the Ural State Univers…
