Ellery的book

Description 小花梨给出

#include<iostream> #include<vector> #include<queue> using namespace std; typedef long long LL; const int N=1e5+10; vector<int> G[N]; queue<int> q; bool vis[N]; int du[N];...

POJ - 3310 Caterpillar An undirected graph is called a caterpillar if it is connected, has no cycles, and there is a path in the graph where every node is either on this path or a neighbor of a node o...

A school bought the first computer some time ago(so this computer’s id is 1). During the recent years the school bought N-1 new computers. Each new computer was connected to one of settled earlier. Ma...

Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and performs exchange operations only with these currencies. There can...

#include #include<stdio.h> #include #include #include<string.h> using namespace std; typedef long long ll; int n,m,s; #define maxn 605 ll edge[maxn]; int tot,head[maxn]; int vis[maxn],ver[...

Firdaws and Fatinah are living in a country with n cities, numbered from 1 to n . Each city has a risk of kidnapping or robbery. Firdaws’s home locates in the city u , and Fatinah’s home locates in th...