public ListGraph transpose() {
ListGraph g = new ListGraph(vs);
for (Vertex v : g.vs) {
v.edges = null;
}
for (Vertex v : vs) {
Edge e = v.edges;
while (e != null) {
g.addEdge(e.dest.idx, v.idx, e.weight, false);
e = e.next;
}
}
g.setStart(start);
// System.out.println(vs[0] + "," + g.vs[0]);
return g;
}
/*
1
8 14
1 2
2 3
2 5
2 6
3 4
3 7
4 3
4 8
5 1
5 6
6 7
7 6
7 8
8 8
3
*/
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
for (int i = 0; i < n; i++) {
int v = sc.nextInt();
int e = sc.nextInt();
ListGraph g = new ListGraph(v);
for (int j = 0; j < e; j++) g.addEdge(sc.nextInt() - 1, sc.nextInt() - 1, 1);
g.setStart(sc.nextInt() - 1);
System.out.println(g);
g.dfs(g.getStart());
g.printTree();
ListGraph tg = g.transpose();
tg.dfs();
tg.printTree();
System.out.println(tg);
}
sc.close();
}
