Cod sursa(job #2418156)

Utilizator stefzahZaharia Stefan Tudor stefzah Data 3 mai 2019 20:59:38
Problema Parcurgere DFS - componente conexe Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.49 kb
#include <fstream>
#include <vector>
using namespace std;
ifstream fin("dfs.in");
ofstream fout("dfs.out");
int N,M,x,y,ct;
vector <int> v[100005];
bool f[100005];
void DFS(int nod)
 {int i;
  f[nod]=1;
  for(i=0;i<v[nod].size();i++)
     {if(f[v[nod][i]]==0)DFS(v[nod][i]);

     }
 }
int main()
{int i;
 fin>>N>>M;
 for(i=1;i<=M;i++)
    {fin>>x>>y;
     v[x].push_back(y);
     v[y].push_back(x);
    }
 ct=0;
 for(i=1;i<=N;i++)
    if(f[i]==0){DFS(i);ct++;}
 fout<<ct;
}