1617: Graph 时间限制: 1 Sec  内存限制: 32 MB提交: 31  解决: 5[提交][状态][讨论版] 题目描述 Your task is to judge whether a regular polygon can be drawn only by straightedge and compass. The length of the straightedge is infinite. The width of the compass is infinite. The s…

题目链接:1326: Graph 参考博客:HNUSTOJ-1617 Graph(费马数)--G2MI Description Your task is to judge whether a regular polygon can be drawn only by straightedge and compass. The length of the straightedge is infinite. The width of the compass is infinite. The strai…

问题 F: Graph 时间限制: 1 Sec  内存限制: 128 MB 提交: 30  解决: 5 [cid=1073&pid=5&langmask=0" style="color:rgb(26,92,200)">提交][id=2308" style="color:rgb(26,92,200)">状态][论坛] 题目描写叙述 Your task is to judge whether a regular polyg…

TimeWall is a graph databases github It be used to apply mathematic model and social network with graph algorithms and so on... Features: 1. C/S structure 2. compute in memory 3. dynamic add and remove nodes on the graph db 4. with lots of algorithms…

Source: Connected Brain Figure above: Bullmore E, Sporns O. Complex brain networks: graph theoretical analysis of structural and functional systems.[J]. Nature Reviews Neuroscience, 2009, 10(3):186-198. Graph measures A graph G consisting of a set of…

Destroying The Graph Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 8198   Accepted: 2635   Special Judge Description Alice and Bob play the following game. First, Alice draws some directed graph with N vertices and M arcs. After that B…

Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: 0          3 |          | 1 --- 2    4 Given n = 5 and…

Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges make up a valid tree. For example: Given n = 5 and edges = [[0, 1], [0, 2], [0, 3], [1, 4]], return tru…

Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use # as a separator for each node, and , as a separator for node label and each neigh…

Influence maximization on big social graph Fanju PPT链接: social influence booming of online social network 一, Application:viral marketing 1, identify influence customers: seeds. 2, convince them to adopter product. other application: Rumor monitoring…