Cod sursa(job #2662126)
Utilizator | Mihaila Stefan-Alexandru ANNOnymous | Data | 23 octombrie 2020 16:06:00 |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 50 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.63 kb |
#include <iostream>
#include <fstream>
using namespace std;
ofstream fout("dfs.out");
int n, m, mat[1001][1001], viz[1001], cnt;
void citire()
{
ifstream fin("dfs.in");
int x, y;
fin>>n>>m;
for(int i=1;i<=m;i++){
fin>>x>>y;
mat[x][y]=mat[y][x]=1;
}
fin.close();
}
void DFS(int x)
{
int i;
viz[x]=1;
for(i=1;i<=n;i++)
if(!viz[i]&&mat[x][i]==1){
DFS(i);
}
}
int main()
{
citire();
int i, cnt=0;
for(i=1;i<=n;i++){
if(!viz[i]){
cnt++;
DFS(i);
}
}
fout<<cnt<<'\n';
}