Cod sursa(job #2553723)

Utilizator alex_25Potanga Alexandru Alin alex_25 Data 22 februarie 2020 11:22:39
Problema Parcurgere DFS - componente conexe Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.61 kb
#include <fstream>
#include <vector>
using namespace std;
ifstream f("dfs.in");
ofstream g("dfs.out");
int viz[100001];
vector <int> v[100001];
void dfs(int nod)
{
    int i;
    viz[nod]=1;
    for(i=0;i<v[nod].size();i++)
        if(viz[v[nod][i]]==0)
            dfs(v[nod][i]);
}
int main()
{
    int n,m,i,x,y,nrcomp=0;
    f>>n>>m;
    for(i=1;i<=m;i++)
    {
        f>>x>>y;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    for(i=1;i<=n;i++)
    {
        if(viz[i]==0)
        {
            nrcomp++;
            dfs(i);
        }
    }
    g<<nrcomp;
    return 0;
}