Nu aveti permisiuni pentru a descarca fisierul grader_test11.in
Cod sursa(job #1438181)
Utilizator | Radu Cosma radu_cosma | Data | 19 mai 2015 11:10:55 |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.61 kb |
#include<iostream>
#include<fstream>
#include<vector>
#define nmax 100000
using namespace std;
ifstream in("canale.in");
ofstream out("canale.out");
vector<int> g[nmax];
int m[nmax];
void dfs(int x){
{ m[x]=1;
for(vector<int>::iterator it=g[x].begin(); it!=g[x].end();it++)
if(m[*it]==0)
dfs(*it);
}
}
int main(){
int n,p,i,a,b,x,c=0;
in>>n>>p;
for(i=1;i<=p;i++)
{ in>>a>>b;
g[a].push_back(b);
g[b].push_back(a);
}
for(i=1;i<=n;i++) if(!m[i]) { dfs(i); c++; }
out<<c<<'\n';
return 0;
}