#include #include #include #include #include #include #include using std::cin; using std::cout; const char endl = '\n'; const int N = 2e5 + 5; int n, m, q; int cnt = 1, edge_cnt; std::map map[N]; std::vector> qs[N]; std::vector ans; struct edge { int l, r, x, y, w; edge(const int &_x = 0, const int &_y = 0, const int &_l = 0, const int &_w = 0) : l(_l), r(0), x(_x), y(_y), w(_w) {} } edges[N << 1]; struct dsu_item { int f, w, s; dsu_item(const int &_f = 0, const int &_w = 0) : f(_f), w(_w), s(1) {} } dsu[N]; struct seg_node : std::vector { int l, r; seg_node(const int &_l = 0, const int &_r = 0, const std::vector &_v = std::vector()) : std::vector(_v), l(_l), r(_r) {} } tr[N << 2]; class liner_base { private: int b[31]; public: void insert(int w) { for (int i = 29; i >= 0; --i) { if (!(w >> i)) continue; if (!b[i]) { b[i] = w; break; } w ^= b[i]; } } int query(int w) { for (int i = 29; i >= 0; --i) { if (!((w >> i) & 1)) continue; w ^= b[i]; } return w; } } lb[std::__lg(N << 2) + 1]; int find(int x, int &w) { while (x != dsu[x].f) { w ^= dsu[x].w; x = dsu[x].f; } return x; } void merge(int x, int y, int w, int d) { if (x == y) { lb[d].insert(w); return; } if (dsu[x].s < dsu[y].s) std::swap(x, y); dsu[y].f = x; dsu[y].w = w; dsu[x].s += dsu[y].s; } int query(int x, int y, int d) { int w = 0; x = find(x, w); y = find(y, w); if (x != y) return -1; return lb[d].query(w); } void build(int u, int l, int r) { tr[u] = seg_node(l, r); if (l == r) return; int mid = (l + r) >> 1; build(u << 1, l, mid); build(u << 1 | 1, mid + 1, r); } void insert(int u, const edge &e) { if (e.l <= tr[u].l && tr[u].r <= e.r) { tr[u].emplace_back(e); return; } int mid = (tr[u].l + tr[u].r) >> 1; if (e.l <= mid) insert(u << 1, e); if (e.r > mid) insert(u << 1 | 1, e); } void solve(int u, int l, int r, int d) { std::stack> st; lb[d] = lb[d - 1]; for (auto e : tr[u]) { int wx = 0, wy = 0; int x = find(e.x, wx); int y = find(e.y, wy); st.emplace(x, dsu[x]); st.emplace(y, dsu[y]); merge(x, y, wx ^ wy ^ e.w, d); } if (l == r) { for (auto o : qs[l]) { ans.emplace_back(query(o.first, o.second, d)); } } else { int mid = (l + r) >> 1; solve(u << 1, l, mid, d + 1); solve(u << 1 | 1, mid + 1, r, d + 1); } while (!st.empty()) { dsu[st.top().first] = st.top().second; st.pop(); } } int main() { std::ios::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> m; for (int i = 1; i <= n; i++) { dsu[i] = dsu_item(i, 0); } for (int i = 1, x, y, d; i <= m; i++) { cin >> x >> y >> d; map[x][y] = map[y][x] = ++edge_cnt; edges[edge_cnt] = edge(x, y, 1, d); } cin >> q; for (int i = 1, op, x, y; i <= q; i++) { cin >> op >> x >> y; if (op == 1) { int d; cin >> d; map[x][y] = map[y][x] = ++edge_cnt; edges[edge_cnt] = edge(x, y, ++cnt, d); } else if (op == 2) { edges[map[x][y]].r = cnt++; } else { // op == 3 qs[cnt].emplace_back(x, y); } } build(1, 1, cnt); for (int i = 1; i <= edge_cnt; i++) { if (!edges[i].r) edges[i].r = cnt; insert(1, edges[i]); } solve(1, 1, cnt, 1); std::copy(ans.begin(), ans.end(), std::ostream_iterator(cout, "\n")); return 0; }