Cod sursa(job #2560992)

Utilizator KillHorizon23Orban Robert KillHorizon23 Data 28 februarie 2020 14:25:50
Problema Parcurgere DFS - componente conexe Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.79 kb
#include <bits/stdc++.h>
#define hlo ios::sync_with_stdio(false); fin.tie(0); fout.tie(0);
using namespace std;
const int NMAX = 100005;
ifstream fin("dfs.in");
ofstream fout("dfs.out");
vector < int > graf[NMAX];
vector < bool > vec(NMAX);
void DFS(int Nod)
{
    vec[Nod] = 1;
    for (int i = 0; i < graf[Nod].size(); ++i)
    {
        int neig = graf[Nod][i];
        if (!vec[neig])
            DFS(neig);
    }
}
int main()
{
    hlo
    int n, m, x, y;
    fin >> n >> m;
    for (int i = 1; i <= m; ++i)
    {
        fin >> x >> y;
        graf[x].push_back(y);
        graf[y].push_back(x);
    }
    int conex = 0;
    for (int i = 1; i <= n; ++i)
    {
        if (!vec[i]){
            conex++;
            DFS(i);
        }
    }
    fout << conex;
}