空白

N planets are connected by M bidirectional channels that allow instant transportation. It’s always possible to travel between any two planets through these channels. 　　If we can isolate some planets

I - Caocao’s Bridges Caocao was defeated by Zhuge Liang and Zhou Yu in the battle of Chibi. But he wouldn’t give up. Caocao’s army still was not good at water battles, so he came up with another idea.

B - Network UVA - 315 A Telephone Line Company (TLC) is establishing a new telephone cable network. They are connecting several places numbered by integers from 1 to N. No two places have the same n

Network of Schools POJ - 1236 A number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a list of schools to which it distrib

#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>using namespace std;const int maxn=10101;const int qmaxn=501010;int F[maxn];int find(int x){ if(F[x]==-1)return x;

lca的离线操作：这篇博客写的很好 https://www.cnblogs.com/JVxie/p/4854719.html。。我实现的代码#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>using namespace std;const int maxn=80010;struct node{

#include<iostream>#include<stack>#include<cstdio>#include<cstring>#include<algorithm>using namespace std;const int maxn=110000;struct node{ int v,next;}edge[maxn*3];int cnt=0,n,m,ans,top,

In a computer network a link L, which interconnects two servers, is considered critical if there are at least two servers A and B such that all network interconnection paths between A and B pass throu

Give a simple directed graph with N nodes and M edges. Please tell me the maximum number of the edges you can add that the graph is still a simple directed graph. Also, after you add these edges, this

Every cow’s dream is to become the most popular cow in the herd. In a herd of N (1 &lt;= N &lt;= 10,000) cows, you are given up to M (1 &lt;= M &lt;= 50,000) ordered pairs of the form (A, B) that tell...