Cod sursa(job #1507933)
Utilizator | Stelian Chichirim stelian2000 | Data | 22 octombrie 2015 00:51:46 |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.65 kb |
#include <cstdio>
#include <vector>
using namespace std;
vector<int> v[100010];
int vaz[100010];
void dfs(int nod)
{
vaz[nod]=1;
for(int i=0;i<v[nod].size();i++)
if(vaz[v[nod][i]]==0) dfs(v[nod][i]);
}
int main()
{
freopen("dfs.in","r",stdin);
freopen("dfs.out","w",stdout);
int n,m,x,y,nrcomp=0;
scanf("%d%d",&n,&m);
for(int i=1;i<=m;i++)
{
scanf("%d%d",&x,&y);
v[x].push_back(y);
v[y].push_back(x);
}
for(int i=1;i<=n;i++)
if(vaz[i]==0)
{
nrcomp++;
dfs(i);
}
printf("%d",nrcomp);
return 0;
}