标签:style blog http color os io for ar
最近状态不佳,总是爱犯低级错误,比较水的题,没什么需要讲得,要说的可能是floyd判断包闭吧
void Floyd()
{
for(int k=1; k<=n; k++)
for(int i=1; i<=n; i++)
if(map[i][k])
for(int j=1; j<=n; j++)
if(map[k][j])
map[i][j] = 1;
} 之前做了不少图论,图论周感觉能应付的过去。
| 14059727 | 247 | Calling Circles | Accepted | C++ | 0.058 | 2014-08-18 12:21:42 |
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<vector>
#include<stack>
#include<queue>
#include<map>
#include<set>
#include<list>
#include<cmath>
#include<string>
#include<sstream>
#include<ctime>
using namespace std;
#define _PI acos(-1.0)
#define esp 1e-9
#define INF 1 << 30
typedef long long LL;
typedef unsigned long long ULL;
typedef pair<int,int> pill;
/*===========================================
===============KinderRiven===================
===========================================*/
#define MAXD 25 + 1
int n,m;
map<string,int>name;
vector<string>Name;
int G[MAXD][MAXD],id;
int vis[MAXD];
void init(){
name.clear();
Name.clear();
id = 0;
memset(G,0,sizeof(G));
memset(vis,0,sizeof(vis));
}
void dfs(int u){
vis[u] = 1;
for(int i = 0 ; i < n ; i++)
if(G[u][i] == 1 && G[u][i] == G[i][u]){
if(!vis[i]){
cout << ", " << Name[i];
dfs(i);
}
}
}
int main(){
int Case = 1;
while(cin >> n >> m){
init();
if(!n && !m) break;
for(int i = 0 ; i < m ; i++){
string s1,s2;
cin >> s1 >> s2;
if(!name.count(s1)){
name[s1] = id++;
Name.push_back(s1);
}
if(!name.count(s2)){
name[s2] = id++;
Name.push_back(s2);
}
int x = name[s1] , y = name[s2]; /*找出2个字符串对应的ID*/
G[x][y] = 1; /*连接*/
}
for(int k = 0 ; k < n ; k++)
for(int i = 0 ; i < n ; i++)
if(G[i][k])
for(int j = 0; j < n ; j++)
if(G[k][j]){
G[i][j] = 1;
}
if(Case > 1)
cout << endl;
cout << "Calling circles for data set " << Case++ <<":" << endl;
for(int i = 0; i < n ; i++){
if(!vis[i]){
cout << Name[i];
dfs(i);
cout << endl;
}
}
}
return 0;
}
/*
5 5
A B
A B
A B
C D
E C
*/
【UVA】247 - Calling Circles(floyd判断包闭,dfs输出),布布扣,bubuko.com
【UVA】247 - Calling Circles(floyd判断包闭,dfs输出)
标签:style blog http color os io for ar
原文地址:http://blog.csdn.net/u013451221/article/details/38665481