#include #include #include #include #include #include #include using namespace std; int main(){ long long N, A, B, Q, from; cin >> N; vector> E(N); for (int i=0; i < N-1; i++){ cin >> A >> B; A--; B--; E[A].push_back(B); E[B].push_back(A); } vector dist(N, -1); queue que; dist[0] = 0; que.push(0); for (int i=1; i