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#define PROBLEM "https://judge.yosupo.jp/problem/unionfind" #include "../../template.hpp" #include "../test_utils.hpp" #include "../../ds/dsu.hpp" int main() { fast_io(); int N = readi(), Q = readi(); DSU d; d.init(N); while (Q--) { int t = readi(), a = readi(), b = readi(); switch (t) { case 0: d.merge(a, b); break; case 1: print(d.con(a, b)); } } }
#line 1 "tests/ds/dsu.test.cpp" #define PROBLEM "https://judge.yosupo.jp/problem/unionfind" #line 2 "template.hpp" #include <bits/stdc++.h> #define DEBUG 1 using namespace std; // Defines #define fs first #define sn second #define pb push_back #define eb emplace_back #define mpr make_pair #define mtp make_tuple #define all(x) (x).begin(), (x).end() // Basic type definitions #if __cplusplus == 201703L // CPP17 only things template <typename T> using opt_ref = optional<reference_wrapper<T>>; // for some templates #endif using ll = long long; using ull = unsigned long long; using ld = long double; using pii = pair<int, int>; using pll = pair<long long, long long>; #ifdef __GNUG__ // PBDS order statistic tree #include <ext/pb_ds/assoc_container.hpp> // Common file #include <ext/pb_ds/tree_policy.hpp> using namespace __gnu_pbds; template <typename T, class comp = less<T>> using os_tree = tree<T, null_type, comp, rb_tree_tag, tree_order_statistics_node_update>; template <typename K, typename V, class comp = less<K>> using treemap = tree<K, V, comp, rb_tree_tag, tree_order_statistics_node_update>; // HashSet #include <ext/pb_ds/assoc_container.hpp> template <typename T, class Hash> using hashset = gp_hash_table<T, null_type, Hash>; template <typename K, typename V, class Hash> using hashmap = gp_hash_table<K, V, Hash>; const ll RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count(); struct chash { ll operator()(ll x) const { return x ^ RANDOM; } }; #endif // More utilities int SZ(string &v) { return v.length(); } template <typename C> int SZ(C &v) { return v.size(); } template <typename C> void UNIQUE(vector<C> &v) { sort(v.begin(), v.end()); v.resize(unique(v.begin(), v.end()) - v.begin()); } template <typename T, typename U> void maxa(T &a, U b) { a = max(a, b); } template <typename T, typename U> void mina(T &a, U b) { a = min(a, b); } const ll INF = 0x3f3f3f3f, LLINF = 0x3f3f3f3f3f3f3f3f; #line 3 "tests/test_utils.hpp" // I/O template <typename T> void print(T v) { cout << v << '\n'; } template <typename T, typename... Rest> void print(T v, Rest... vs) { cout << v << ' '; print(vs...); } void fast_io() { ios_base::sync_with_stdio(false); cin.tie(NULL); } // Reading operators template <typename T, typename U> istream& operator>>(istream& in, pair<T, U> &o) { return in >> o.first >> o.second; } // Read helpers int readi() { int x; cin >> x; return x; } ll readl() { ll x; cin >> x; return x; } template <typename T> vector<T> readv(int n) { vector<T> res(n); for (auto &x : res) cin >> x; return res; } // Functional stuff template <typename T> vector<pair<int, T>> enumerate(vector<T> v, int start = 0) { vector<pair<int, T>> res; for (auto &x : v) res.emplace_back(start++, x); return res; } #line 3 "ds/dsu.hpp" struct DSU { vector<int> dsu; void init(int N) { dsu.resize(N + 1); iota(dsu.begin(), dsu.end(), 0); } int rt(int x) { return dsu[x] == x ? x : dsu[x] = rt(dsu[x]); } void merge(int x, int y) { // x -> y dsu[rt(x)] = rt(y); } bool con(int x, int y) { return rt(x) == rt(y); } }; #line 5 "tests/ds/dsu.test.cpp" int main() { fast_io(); int N = readi(), Q = readi(); DSU d; d.init(N); while (Q--) { int t = readi(), a = readi(), b = readi(); switch (t) { case 0: d.merge(a, b); break; case 1: print(d.con(a, b)); } } }