Cod sursa(job #2450767)
Utilizator | Data | 24 august 2019 15:50:20 | |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.6 kb |
#include <fstream>
#include<bits/stdc++.h>
#include<algorithm>
#include<vector>
using namespace std;
ifstream fin("dfs.in");
ofstream fout("dfs.out");
int n,m;
int viz[100005];
int nrc;
vector<int> v[100005];
void DFS(int x) {
viz[x] = 1;
for(int i=0;i<v[x].size();i++)
{ if(!viz[v[x][i]])
DFS(v[x][i]);
}
}
int main()
{
fin>>n>>m;
for(int i=1;i<=m;i++) {
int x,y;
fin>>x>>y;
v[x].push_back(y);
v[y].push_back(x);
}
for(int i=1;i<=n;i++)
{
if(!viz[i]) {DFS(i);nrc++;}
}
fout<<nrc;
}