Nu aveti permisiuni pentru a descarca fisierul grader_test8.in
Cod sursa(job #2013419)
Utilizator | Data | 21 august 2017 13:46:22 | |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.71 kb |
#include <fstream>
#include <vector>
using namespace std;
fstream cin("dfs.in");
ofstream cout("dfs.out");
const int NMAX = 1e5 + 1;
vector <int> gr[NMAX];
int n, m, viz[NMAX];
void dfs(int nod) {
viz[nod] = 1;
for(unsigned i = 0; i < gr[nod].size(); ++i) {
int fiu = gr[nod][i];
if(viz[fiu] == 0) {
dfs(fiu);
}
}
}
int main()
{
cin >> n >> m;
for(int i = 1; i <= m; ++i) {
int x, y;
cin >> x >> y;
gr[x].push_back(y);
gr[y].push_back(x);
}
int nc = 0;
for(int i = 1; i <= n; ++i) {
if(viz[i] == 0) {
++nc;
dfs(i);
}
}
cout << nc;
return 0;
}