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- #include <fstream>
- using namespace std;
- bool a[105][105];
- int n, viz[105];
- ifstream fin("componenteconexe.in");
- ofstream fout("componenteconexe.out");
- void citire()
- {
- int x,y;
- fin>>n;
- while(fin>>x>>y)
- a[x][y]=a[y][x]=1;
- }
- void DFS(int x,int k)
- {
- viz[x]=k;
- for(int i=1; i<=n ; i++)
- if (a[i][x]&&!viz[i])
- DFS(i,k);
- }
- void afisare(int k)
- {
- fout<<k<<'\n';
- for(int i=1; i<=k ; i++)
- {
- for(int j=1; j<=n; j++)
- if (viz[j]==i)
- fout<<j<<" ";
- fout<<'\n';
- }
- }
- int main()
- {
- int k=0;
- citire();
- for(int i=1; i<=n; i++)
- if(!viz[i])
- {
- k++;
- DFS(i,k);
- }
- afisare(k);
- return 0;
- }
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