Description Resource Path Location TypeA cycle was detected in the build path of project 'shgl-category-api'. The cycle consists of projects {shgl-category-api, shgl-category-provider} shgl-category-api Build path Build Path Problem 项目出现红色叹号 有可能好几种原因…

We know that the longest path problem for general case belongs to the NP-hard category, so there is no known polynomial time solution for it. However, for a special case which is directed acyclic graph, we can solve this problem in linear time. First…

We all know that the shortest path problem has optimal substructure. The reasoning is like below: Supppose we have a path p from node u to v, another node t lies on path p: u->t->v ("->" means a path). We claim that u->t is also a sh…

Shortest Path Problem? You are given an undirected graph with weighted edges. The length of some path between two vertices is the bitwise xor of weights of all edges belonging to this path (if some edge is traversed more than once, then it is include…

00 前言 各位小伙伴大家好,相信大家已经看过前面column generation求解vehicle routing problems的过程详解.该问题中,子问题主要是找到一条reduced cost最小的合法路径,然后加入到Master Problem中.其实,子问题也是一个著名的NP-Hard问题,今天我们就来介绍一下. 01 ESPPRC 考虑图1.1中描述的网络. 除了每条边的成本c_ij之外,还存在经过边(i,j)的所消耗的资源t_ij,比如时间. 我们的目标是找到从开始节点到结束节…

[oracle@localhost database]$ ./runInstaller Starting Oracle Universal Installer... Checking Temp space: must be greater than 120 MB. Actual 2847 MB PassedChecking swap space: must be greater than 150 MB. Actual 2047 MB PassedChecking monitor: must be…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=6705 path Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1250    Accepted Submission(s): 257 Problem Description You have a directed weighted graph…

time limit per test 3 seconds memory limit per test 512 megabytes input standard input output standard output You are given an undirected graph with weighted edges. The length of some path between two vertices is the bitwise xor of weights of all edg…

http://codeforces.com/problemset/problem/845/G 从顶点1dfs全图,遇到环则增加一种备选方案,环上的环不需要走到前一个环上作为条件,因为走完第二个环可以从第一个环原路返回. 对每种备选方案通过x = min(x,x^v[i]) 保留备选方案中不存在的最高位,如果能由已经存在的备选方案组合得到则结果为零 最后对val[n]做一次类似的操作得到答案 #include<bits/stdc++.h> using namespace std; ; vecto…

问题描述:之前在项目里引用一个jar 包,后来不用了删掉 ,但是没有删干净,然后报以下错误. 解决方案: 1.删除libraries 2.找到该项目下的 .classpath 文件,用记事本打开 ,删除plweb.jar (有问题的jar包).或者从svn还原 .classpath 文件…