viz[nod] = 1;
    Fii[nod] = 1;

    for(it i=A[nod].begin();i<A[nod].end();i++)

    for(it i=A[nod].begin();i<A[nod].begin();i++)

        if(!viz[i->first])
        {
            DF(i->first);

inline void sterge(void)
{
    for(int i=0;i<N;i++)

        A[i].clear(), Fii[i] = T[i] = viz[i] = 0;

    {
        A[i].clear();
        Fii[i] = T[i] = viz[i] = 0;
    }

}
int main()
{

    //freopen("test.txt","r",stdin);
    int T;
    scanf("%d",&T);

    int nrTeste;
    scanf("%d",&nrTeste);

    for(int i=1;i<=T;i++)

    for(int i=1;i<=nrTeste;i++)

    {
        citire();
        DF(0);