結果
問題 | No.1390 Get together |
ユーザー |
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提出日時 | 2021-02-12 21:55:24 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 237 ms / 2,000 ms |
コード長 | 9,656 bytes |
コンパイル時間 | 2,163 ms |
コンパイル使用メモリ | 211,368 KB |
最終ジャッジ日時 | 2025-01-18 18:26:21 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 29 |
ソースコード
/* #region Head */#include <bits/stdc++.h>using namespace std;using ll = long long;using ull = unsigned long long;using ld = long double;using pll = pair<ll, ll>;template <class T> using vc = vector<T>;template <class T> using vvc = vc<vc<T>>;using vll = vc<ll>;using vvll = vvc<ll>;using vld = vc<ld>;using vvld = vvc<ld>;using vs = vc<string>;using vvs = vvc<string>;template <class T, class U> using um = unordered_map<T, U>;template <class T> using pq = priority_queue<T>;template <class T> using pqa = priority_queue<T, vc<T>, greater<T>>;template <class T> using us = unordered_set<T>;#define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i))#define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i))#define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i))#define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d))#define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d))#define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++)#define REPIR(itr, ds) for (auto itr = ds.rbegin(); itr != ds.rend(); itr++)#define ALL(x) begin(x), end(x)#define SIZE(x) ((ll)(x).size())#define PERM(c) \sort(ALL(c)); \for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c)))#define UNIQ(v) v.erase(unique(ALL(v)), v.end());#define CEIL(a, b) (((a) + (b)-1) / (b))#define endl '\n'constexpr ll INF = 1'010'000'000'000'000'017LL;constexpr int IINF = 1'000'000'007LL;constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7// constexpr ll MOD = 998244353;constexpr ld EPS = 1e-12;constexpr ld PI = 3.14159265358979323846;template <typename T> istream &operator>>(istream &is, vc<T> &vec) { // vector 入力for (T &x : vec) is >> x;return is;}template <typename T> ostream &operator<<(ostream &os, const vc<T> &vec) { // vector 出力 (for dump)os << "{";REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", ");os << "}";return os;}template <typename T> ostream &operator>>(ostream &os, const vc<T> &vec) { // vector 出力 (inline)REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " ");return os;}template <typename T, size_t _Nm> istream &operator>>(istream &is, array<T, _Nm> &arr) { // array 入力REP(i, 0, SIZE(arr)) is >> arr[i];return is;}template <typename T, size_t _Nm> ostream &operator<<(ostream &os, const array<T, _Nm> &arr) { // array 出力 (for dump)os << "{";REP(i, 0, SIZE(arr)) os << arr[i] << (i == i_len - 1 ? "" : ", ");os << "}";return os;}template <typename T, typename U> istream &operator>>(istream &is, pair<T, U> &pair_var) { // pair 入力is >> pair_var.first >> pair_var.second;return is;}template <typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &pair_var) { // pair 出力os << "(" << pair_var.first << ", " << pair_var.second << ")";return os;}// map, um, set, us 出力template <class T> ostream &out_iter(ostream &os, const T &map_var) {os << "{";REPI(itr, map_var) {os << *itr;auto itrcp = itr;if (++itrcp != map_var.end()) os << ", ";}return os << "}";}template <typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &map_var) {return out_iter(os, map_var);}template <typename T, typename U> ostream &operator<<(ostream &os, const um<T, U> &map_var) {os << "{";REPI(itr, map_var) {auto [key, value] = *itr;os << "(" << key << ", " << value << ")";auto itrcp = itr;if (++itrcp != map_var.end()) os << ", ";}os << "}";return os;}template <typename T> ostream &operator<<(ostream &os, const set<T> &set_var) { return out_iter(os, set_var); }template <typename T> ostream &operator<<(ostream &os, const us<T> &set_var) { return out_iter(os, set_var); }template <typename T> ostream &operator<<(ostream &os, const pq<T> &pq_var) {pq<T> pq_cp(pq_var);os << "{";if (!pq_cp.empty()) {os << pq_cp.top(), pq_cp.pop();while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop();}return os << "}";}void pprint() { cout << endl; }template <class Head, class... Tail> void pprint(Head &&head, Tail &&... tail) {cout << head;if (sizeof...(Tail) > 0) cout << ' ';pprint(move(tail)...);}// dump#define DUMPOUT cerrvoid dump_func() { DUMPOUT << endl; }template <class Head, class... Tail> void dump_func(Head &&head, Tail &&... tail) {DUMPOUT << head;if (sizeof...(Tail) > 0) DUMPOUT << ", ";dump_func(move(tail)...);}// chmax (更新「される」かもしれない値が前)template <typename T, typename U, typename Comp = less<>> bool chmax(T &xmax, const U &x, Comp comp = {}) {if (comp(xmax, x)) {xmax = x;return true;}return false;}// chmin (更新「される」かもしれない値が前)template <typename T, typename U, typename Comp = less<>> bool chmin(T &xmin, const U &x, Comp comp = {}) {if (comp(x, xmin)) {xmin = x;return true;}return false;}// ローカル用#ifndef ONLINE_JUDGE#define DEBUG_#endif#ifdef DEBUG_#define DEB#define dump(...) \DUMPOUT << " " << string(#__VA_ARGS__) << ": " \<< "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl \<< " ", \dump_func(__VA_ARGS__)#else#define DEB if (false)#define dump(...)#endif#define VAR(type, ...) \type __VA_ARGS__; \cin >> __VA_ARGS__;template <typename T> istream &operator,(istream &is, T &rhs) { return is >> rhs; }template <typename T> ostream &operator,(ostream &os, const T &rhs) { return os << ' ' << rhs; }struct AtCoderInitialize {static constexpr int IOS_PREC = 15;static constexpr bool AUTOFLUSH = false;AtCoderInitialize() {ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);cout << fixed << setprecision(IOS_PREC);if (AUTOFLUSH) cout << unitbuf;}} ATCODER_INITIALIZE;void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; }void YN(bool p) { cout << (p ? "YES" : "NO") << endl; }/* #endregion */// #include <atcoder/all>// using namespace atcoder;/* #region UnionFind */struct UnionFind {ll _groupcount; // グループ数vc<ll> parent; // 各要素の直接の親リスト,親がいないときは自分自身を指すvc<ll> gsize; // 各要素が根である場合,その要素が属するグループの要素数 (root 要素のみ有効な値を持つ)// コンストラクタUnionFind() {}// コンストラクタ,要素数 n の UnionFind 木を構築するUnionFind(ll n) : _groupcount(n), parent(n), gsize(n, 1) { iota(ALL(parent), 0LL); }// x の属する部分木の根要素を返すll find(ll x) { return x == parent[x] ? x : parent[x] = find(parent[x]); }// x と y が同じグループかどうか判定するbool same(ll x, ll y) { return find(x) == find(y); }// x と y を同じグループにするvoid unite(ll x, ll y) {ll rx = find(x); // x の属するグループの根ll ry = find(y); // y の属するグループの根if (rx == ry) // unite 済return;// assert(x != y)if (gsize[rx] < gsize[ry]) swap(rx, ry);// assert(gsize[x] > gsize[y]); // x 側の木の方が大きいgsize[rx] += gsize[ry]; // x を根とする1つのグループに統合parent[ry] = rx; // ry 以下の木を rx 配下に接続する_groupcount--;}// x が属するグループの要素数を返すll size(ll x) { return gsize[find(x)]; }// 全体のグループ数を返すll count() const { return _groupcount; }};/* #endregion */// Problemvoid solve() {VAR(ll, n, m); //vll b(n), c(n);REP(i, 0, n) {cin >> b[i] >> c[i];--b[i], --c[i];}map<ll, vll> mp; // color -> boxesREP(i, 0, n) mp[c[i]].push_back(b[i]);UnionFind uf(m); // 箱のマージを管理するfor (auto [color, boxes] : mp) {if (SIZE(boxes) == 1) continue;REP(i, 1, SIZE(boxes)) uf.unite(boxes[0], boxes[i]);}// auto sz2cnt = [](const ll sz) -> ll{// // 1 -> 0// // 2 -> 1// // 3 -> 2// // 4 -> 3// // 5 -> 4// // 6 -> 5// };set<ll> roots;ll ret = 0;REP(i, 0, m) {ll root = uf.find(i);if (roots.count(root)) continue;roots.insert(root);ll sz = uf.size(i);// dump(i, sz, s);// ll s = 1, cnt = 0;// while (s < sz) s <<= 1, cnt++;// ret += cnt;ret += (sz - 1);}pprint(ret);}// entry pointint main() {solve();return 0;}