//#pragma GCC optimize("Ofast") //#pragma GCC target("avx") //#undef LOCAL #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using uint = unsigned int; using ll = long long; using ull = unsigned long long; constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); } template using V = vector; template using VV = V>; struct Scanner { FILE* fp = nullptr; char line[(1 << 15) + 1]; size_t st = 0, ed = 0; void reread() { memmove(line, line + st, ed - st); ed -= st; st = 0; ed += fread(line + ed, 1, (1 << 15) - ed, fp); line[ed] = '\0'; } bool succ() { while (true) { if (st == ed) { reread(); if (st == ed) return false; } while (st != ed && isspace(line[st])) st++; if (st != ed) break; } if (ed - st <= 50) reread(); return true; } template ::value, int> = 0> bool read_single(T& ref) { if (!succ()) return false; while (true) { size_t sz = 0; while (st + sz < ed && !isspace(line[st + sz])) sz++; ref.append(line + st, sz); st += sz; if (!sz || st != ed) break; reread(); } return true; } template ::value, int> = 0> bool read_single(T& ref) { if (!succ()) return false; bool neg = false; if (line[st] == '-') { neg = true; st++; } ref = T(0); while (isdigit(line[st])) { ref = 10 * ref + (line[st++] - '0'); } if (neg) ref = -ref; return true; } template bool read_single(V& ref) { for (auto& d : ref) { if (!read_single(d)) return false; } return true; } void read() {} template void read(H& h, T&... t) { bool f = read_single(h); assert(f); read(t...); } Scanner(FILE* _fp) : fp(_fp) {} }; struct Printer { public: template void write() {} template void write(const H& h, const T&... t) { if (F) write_single(' '); write_single(h); write(t...); } template void writeln(const T&... t) { write(t...); write_single('\n'); } Printer(FILE* _fp) : fp(_fp) {} ~Printer() { flush(); } private: static constexpr size_t SIZE = 1 << 15; FILE* fp; char line[SIZE], small[50]; size_t pos = 0; void flush() { fwrite(line, 1, pos, fp); pos = 0; } void write_single(const char& val) { if (pos == SIZE) flush(); line[pos++] = val; } template ::value, int> = 0> void write_single(T val) { if (pos > (1 << 15) - 50) flush(); if (val == 0) { write_single('0'); return; } if (val < 0) { write_single('-'); val = -val; // todo min } size_t len = 0; while (val) { small[len++] = char('0' + (val % 10)); val /= 10; } for (size_t i = 0; i < len; i++) { line[pos + i] = small[len - 1 - i]; } pos += len; } void write_single(const string& s) { for (char c : s) write_single(c); } void write_single(const char* s) { size_t len = strlen(s); for (size_t i = 0; i < len; i++) write_single(s[i]); } template void write_single(const V& val) { auto n = val.size(); for (size_t i = 0; i < n; i++) { if (i) write_single(' '); write_single(val[i]); } } }; struct UnionFind { int n; V p, r; V val; UnionFind(int _n = 0) : n(_n), p(n, -1), r(n, 1), val(n) {} void merge(int a, int b) { assert(0 <= a && a < n); assert(0 <= b && b < n); int x = group(a), y = group(b); if (x == y) return; // same if (r[x] < r[y]) { p[x] = y; val[x] -= val[y]; } else { p[y] = x; val[y] -= val[x]; if (r[x] == r[y]) r[x]++; } } void add(int a, ll z) { val[group(a)] += z; } ll get(int a) { if (p[a] == -1) return val[a]; return val[a] + get(p[a]); } int group(int a) { assert(0 <= a && a < n); if (p[a] == -1) return a; return group(p[a]); } bool same(int a, int b) { assert(0 <= a && a < n); assert(0 <= b && b < n); return group(a) == group(b); } }; Scanner sc = Scanner(stdin); Printer pr = Printer(stdout); int main() { int n, q; sc.read(n, q); auto uf = UnionFind(n); for (int ph = 0; ph < q; ph++) { int ty; sc.read(ty); if (ty == 1) { int a, b; sc.read(a, b); a--; b--; uf.merge(a, b); } else if (ty == 2) { int a, b; sc.read(a, b); a--; uf.add(a, b); } else { int a, b; sc.read(a, b); a--; pr.writeln(uf.get(a)); } } return 0; }