#include using namespace std; using LL = long long int; #define incID(i, l, r) for(int i = (l) ; i < (r); ++i) #define decID(i, l, r) for(int i = (r) - 1; i >= (l); --i) #define incII(i, l, r) for(int i = (l) ; i <= (r); ++i) #define decII(i, l, r) for(int i = (r) ; i >= (l); --i) #define inc(i, n) incID(i, 0, n) #define dec(i, n) decID(i, 0, n) #define inc1(i, n) incII(i, 1, n) #define dec1(i, n) decII(i, 1, n) #define inID(v, l, r) ((l) <= (v) && (v) < (r)) #define inII(v, l, r) ((l) <= (v) && (v) <= (r)) #define PB push_back #define EB emplace_back #define MP make_pair #define MT make_tuple #define FI first #define SE second #define FR front() #define BA back() #define ALL(v) v.begin(), v.end() #define RALL(v) v.rbegin(), v.rend() auto setmin = [](auto & a, auto b) { return (b < a ? a = b, true : false); }; auto setmax = [](auto & a, auto b) { return (b > a ? a = b, true : false); }; auto setmineq = [](auto & a, auto b) { return (b <= a ? a = b, true : false); }; auto setmaxeq = [](auto & a, auto b) { return (b >= a ? a = b, true : false); }; #define SI(v) static_cast(v.size()) #define RF(e, v) for(auto & e: v) #define until(e) while(! (e)) #define if_not(e) if(! (e)) #define ef else if #define UR assert(false) #define IN(T, ...) T __VA_ARGS__; IN_(__VA_ARGS__); void IN_() { }; template void IN_(T & a, U & ... b) { cin >> a; IN_(b ...); }; template void OUT(T && a ) { cout << a << endl; } template void OUT(T && a, U && ... b) { cout << a << " "; OUT(b ...); } // ---- ---- template class SegmentTree { private: int n, s; vector a; function f; T e; bool ok; public: SegmentTree() { n = 0; } SegmentTree(int nn, function ff, T ee) { init(nn, ff, ee); } void init(int nn, function ff, T ee) { n = nn; f = ff; e = ee; s = 1; while(s < n) { s *= 2; } a = vector(2 * s, e); ok = true; } void shift(int & p) { assert(inID(p, 0, n)); p += s; } void apply(int p, function g) { shift(p); g(a[p]); while(p > 1) { p /= 2; a[p] = f(a[2 * p], a[2 * p + 1]); } } T fold_ID(int l, int r) { assert(ok); assert(inII(l, 0, n)); l += s; assert(inII(r, 0, n)); r += s; r--; T x = e, y = e; while(l <= r) { if(l % 2 == 1) { x = f(x, a[l]); l++; } if(r % 2 == 0) { y = f(a[r], y); r--; } l /= 2; r /= 2; } return f(x, y); } T fold_II(int l, int r) { return fold_ID(l + 0, r + 1); } T fold_CI(int l, int r) { return fold_ID(l + 1, r + 1); } T fold_CD(int l, int r) { return fold_ID(l + 1, r + 0); } const T & operator[](int p) { shift(p); return a[p]; } T & ref(int p) { shift(p); ok = false; return a[p]; } void update() { dec(i, s) { a[i] = f(a[2 * i], a[2 * i + 1]); } ok = true; } }; #define OP(s) [&](auto & A, auto & B) { return s; } #define AP(s) [&](auto & A) { s; } // ---- class UnionFind { private: int n, s; vector t; vector> v; public: UnionFind(int arg_n = 0) { init(arg_n); } void init(int arg_n) { n = s = arg_n; t.clear(); v.clear(); inc(i, n) { t.PB(i); v.EB(1, i); } } int get_n() { return n; } int size() { return s; } int id(int x) { return t.at(x); } const vector> & get_v() { return v; } bool unite(int x, int y) { x = id(x); y = id(y); if(x == y) { return false; } if(v[x].size() < v[y].size()) { swap(x, y); } for(auto & e: v[y]) { v[x].PB(e); t[e] = x; } v[y].clear(); s--; return true; } bool same(int x, int y) { return (id(x) == id(y)); } const vector & operator[](int x) { return v[id(x)]; } friend ostream & operator<<(ostream & os, const UnionFind & uf) { inc(i, uf.n) { os << i << ": "; for(auto & e: uf.v[i]) { os << e << " "; } os << "\n"; } return os; } }; // ---- ---- template istream & operator>>(istream & s, vector & v) { RF(e, v) { s >> e; } return s; } template ostream & operator<<(ostream & s, vector const & v) { inc(i, SI(v)) { s << (i == 0 ? "" : " ") << v[i]; } return s; } template istream & operator>>(istream & s, array & a) { RF(e, a) { s >> e; } return s; } template ostream & operator<<(ostream & s, array const & a) { inc(i, SI(a)) { s << (i == 0 ? "" : " ") << a[i]; } return s; } int main() { IN(int, n, q); vector> Q(q); cin >> Q; inc1(i, n) { Q.PB({ 1, 0, i }); } n++; UnionFind uf(n); vector> g(n); for(auto [t, a, b]: Q) { if(t == 1) { if(uf.unite(a, b)) { g[a].PB(b); g[b].PB(a); } } } vector p(n), et_i(n), et_o(n); int c = 0; function dfs = [&](int v, int pp) { p[v] = pp; et_i[v] = c; RF(e, g[v]) { if(e == pp) { continue; } c++; dfs(e, v); } c++; et_o[v] = c; }; dfs(0, -1); SegmentTree st(2 * n, OP(A + B), 0); uf.init(n); vector r_(n); inc(i, n) { r_[i] = i; } auto root = [&](int v) -> int & { return r_[uf.id(v)]; }; for(auto [t, a, b]: Q) { if(t == 1) { if(uf.same(a, b)) { continue; } assert(a == p[b] || b == p[a]); int U, D; if(a == p[b]) { U = a; D = b; } else { U = b; D = a; } int s = st.fold_ID(et_i[root(U)], et_i[D]); st.apply(et_i[D], AP(A -= s)); st.apply(et_o[D], AP(A += s)); int r = root(U); uf.unite(a, b); root(U) = r; assert(root(D) == r); } if(t == 2) { st.apply(et_i[root(a)], AP(A += b)); st.apply(et_o[root(a)], AP(A -= b)); } if(t == 3) { OUT(st.fold_II(et_i[root(a)], et_i[a])); } } }