結果
問題 | No.2987 Colorful University of Tree |
ユーザー |
|
提出日時 | 2024-12-12 04:34:34 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 789 ms / 5,000 ms |
コード長 | 14,941 bytes |
コンパイル時間 | 6,344 ms |
コンパイル使用メモリ | 307,740 KB |
最終ジャッジ日時 | 2025-02-26 12:11:35 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 42 |
ソースコード
#ifndef HIDDEN_IN_VS // 折りたたみ用// 警告の抑制#define _CRT_SECURE_NO_WARNINGS// ライブラリの読み込み#include <bits/stdc++.h>using namespace std;// 型名の短縮using ll = long long; using ull = unsigned long long; // -2^63 ~ 2^63 = 9e18(int は -2^31 ~ 2^31 = 2e9)using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;using Graph = vvi;// 定数の定義const double PI = acos(-1);int DX[4] = { 1, 0, -1, 0 }; // 4 近傍(下,右,上,左)int DY[4] = { 0, 1, 0, -1 };int INF = 1001001001; ll INFL = 4004004003094073385LL; // (int)INFL = INF, (int)(-INFL) = -INF;// 入出力高速化struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;// 汎用マクロの定義#define all(a) (a).begin(), (a).end()#define sz(x) ((int)(x).size())#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), (x)))#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), (x)))#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 から n-1 まで昇順#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s から t まで昇順#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s から t まで降順#define repe(v, a) for(const auto& v : (a)) // a の全要素(変更不可能)#define repea(v, a) for(auto& v : (a)) // a の全要素(変更可能)#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d ビット全探索(昇順)#define repis(i, set) for(int i = lsb(set), bset##i = set; i < 32; bset##i -= 1 << i, i = lsb(bset##i)) // set の全要素(昇順)#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a の順列全て(昇順)#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} // 重複除去#define EXIT(a) {cout << (a) << endl; exit(0);} // 強制終了#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) // 半開矩形内判定// 汎用関数の定義template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // 最大値を更新(更新されたら trueを返す)template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // 最小値を更新(更新されたら trueを返す)template <class T> inline T getb(T set, int i) { return (set >> i) & T(1); }template <class T> inline T smod(T n, T m) { n %= m; if (n < 0) n += m; return n; } // 非負mod// 演算子オーバーロードtemplate <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }#endif // 折りたたみ用#if __has_include(<atcoder/all>)#include <atcoder/all>using namespace atcoder;#ifdef _MSC_VER#include "localACL.hpp"#endifusing mint = modint998244353;//using mint = static_modint<1000000007>;//using mint = modint; // mint::set_mod(m);namespace atcoder {inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }}using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>; using pim = pair<int, mint>;#endif#ifdef _MSC_VER // 手元環境(Visual Studio)#include "local.hpp"#else // 提出用(gcc)inline int popcount(int n) { return __builtin_popcount(n); }inline int popcount(ll n) { return __builtin_popcountll(n); }inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : 32; }inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : 64; }inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }#define dump(...)#define dumpel(...)#define dump_list(v)#define dump_mat(v)#define input_from_file(f)#define output_to_file(f)#define Assert(b) { if (!(b)) { vc MLE(1<<30); EXIT(MLE.back()); } } // RE の代わりに MLE を出す#endifmt19937_64 mt;uniform_int_distribution<int> rnd(0, (int)1e9);// 13AC, 28TLE.tuple<int, vi, vvi> solve_largeN_TLE(int n, const vvi& es) {vi deg(n);rep(i, n) deg[i] = sz(es[i]);int deg_max = *max_element(all(deg));int K = max((int)ceil(sqrt(2 * (n - 1))), deg_max);dump("K:", K);vector<pii> deg_i(n);rep(i, n) deg_i[i] = { deg[i], i };sort(all(deg_i), greater<pii>());vvi col_to_vs;while (1) {col_to_vs = vvi(K);priority_queue<pii> q;rep(k, K) q.push({ K, k });bool ok = true;for (auto [d, i] : deg_i) {auto [rem, k] = q.top(); q.pop();// パスグラフだとこうなりやすいはずif (rem - d < 0) {ok = false;break;}col_to_vs[k].push_back(i);if (rem - d > 0) q.push({ rem - d, k });}if (ok) break;K++; // 高々 1 回のはず}dumpel(col_to_vs);vi res_v(n);rep(k, K) repe(v, col_to_vs[k]) res_v[v] = k;vector<vector<tuple<int, int, int>>> vcol_to_vjes(K);rep(k, K) {repe(v, col_to_vs[k]) {rep(j, sz(es[v])) {vcol_to_vjes[k].push_back({ v, j, es[v][j] });}}}dumpel(vcol_to_vjes);vvi res_e(es);vi p_all(K);iota(all(p_all), 0);while (1) {vi e_to_col(n - 1, -1); int col = 0; bool ok = true;vi k_all(K);iota(all(k_all), 0);shuffle(all(k_all), mt);repe(k, k_all) {int L = sz(vcol_to_vjes[k]);vi p;rep(l, L) {p.push_back(col);col = (col + 1) % K;}shuffle(all(p), mt);int pt = 0;for (auto [v, j, e] : vcol_to_vjes[k]) {if (e_to_col[e] == -1) {e_to_col[e] = p[pt];}else {// N が大きいときはこんな弱い条件ランダムでも満たせそう.→ そうでもなさそうif (e_to_col[e] == p[pt]) {ok = false;break;}}res_e[v][j] = p[pt];pt++;}if (!ok) break;}if (ok) break;}return { K, res_v, res_e };}//【集合の分割の列挙(k 個)】O(s2(n, k))/** [0..n) の k 個の集合への分割全てからなるリストを返す.*/vvvi set_partitions(int n, int k) {//【具体例】// (n, k) = (3, 2) のとき:// 0: {0, 1}, {2}// 1: {0, 2}, {1}// 2: {0}, {1, 2}vvvi sps; vvi sp;function<void(int)> rf = [&](int x) {// 全ての要素の所属を決め終えた場合if (x == n) {if (sz(sp) == k) sps.push_back(sp);return;}// 要素 x を既に存在する集合に含める場合if (sz(sp) + (n - x - 1) >= k) {rep(i, sz(sp)) {sp[i].push_back(x);rf(x + 1);sp[i].pop_back();}}// 要素 x を単独で新たな集合とする場合if (sz(sp) < k) {sp.push_back(vi{ x });rf(x + 1);sp.pop_back();}return;};rf(0);return sps;}//【順列の列挙】O(nPk)/** a[0..n) の k=n 個の要素からなる順列全てからなるリストを返す(要素の重複は検出しない)*/template <class T>vector<vector<T>> enumerate_permutations(const vector<T>& a, int k = -1) {// verify : https://atcoder.jp/contests/abc054/tasks/abc054_cint n = sz(a);if (k == -1) k = n;vector<vector<T>> seqs;if (n < k) return seqs;vector<T> seq; // 作成途中の順列// 残っている要素の位置を記録する双方向リスト(0 番目は根として利用する)vi prv(n + 2), nxt(n + 2);iota(all(prv), -1);iota(all(nxt), 1);function<void()> rf = [&]() {// 完成していれば記録する.if (sz(seq) == k) {seqs.push_back(seq);return;}for (int i = nxt[0]; i <= n; i = nxt[i]) {seq.push_back(a[i - 1]);nxt[prv[i]] = nxt[i];prv[nxt[i]] = prv[i];rf();prv[nxt[i]] = i;nxt[prv[i]] = i;seq.pop_back();}};rf();return seqs;}//【任意列の列挙】O(Π_i |a[i]|)/** 各 i∈[0..n) について x[i]∈a[i] を満たす x[0..n) の全てを格納したリストを返す.*/template <class T>vector<vector<T>> enumerate_all_sequences(const vector<vector<T>>& a) {int n = sz(a);vector<vector<T>> seqs;vector<T> seq(n);function<void(int)> rf = [&](int i) {if (i == n) {seqs.push_back(seq);return;}repe(x, a[i]) {seq[i] = x;rf(i + 1);}};rf(0);return seqs;}// N が小さいときは愚直でいい.tuple<int, vi, vvi> solve_smallN(int n, const vvi& es) {vvi res_e(es);repi(K, 1, 10) {dump("------------ K:", K, "----------------");vi p_all(K);iota(all(p_all), 0);auto sps = set_partitions(n, K);repe(sp, sps) {vi res_v(n);rep(k, K) repe(v, sp[k]) res_v[v] = k;dump(res_v);vector<vector<tuple<int, int, int>>> vcol_to_vjes(K);rep(v, n) {rep(j, sz(es[v])) {vcol_to_vjes[res_v[v]].push_back({ v, j, es[v][j] });}}dumpel(vcol_to_vjes);bool ok = true;rep(k, K) {if (sz(vcol_to_vjes[k]) > K) {ok = false;break;}}if (!ok) continue;vvvi psss(K);rep(k, K) {int L = sz(vcol_to_vjes);psss[k] = enumerate_permutations(p_all, L);}dumpel(psss);auto pss_set = enumerate_all_sequences(psss);// dumpel(pss_set);repe(pss, pss_set) {dump("pss:"); dumpel(pss);vi e_to_col(n - 1, -1); bool ok = true;rep(k, K) {int pt = 0;for (auto [v, j, e] : vcol_to_vjes[k]) {if (e_to_col[e] == -1) {e_to_col[e] = pss[k][pt];}else {if (e_to_col[e] == pss[k][pt]) {ok = false;break;}}res_e[v][j] = pss[k][pt];pt++;}if (!ok) break;}if (ok) return { K, res_v, res_e };}}}return tuple<int, vi, vvi>();}bool check(int n, vvi es, int K, vi res_v, vvi res_e) {vi e_to_col(n - 1, -1);set<pii> vc_ec;rep(v, n) {rep(j, sz(es[v])) {int e = es[v][j];int vc = res_v[v];int ec = res_e[v][j];if (vc_ec.count({ vc, ec })) return 0;vc_ec.insert({ vc, ec });if (e_to_col[e] == -1) {e_to_col[e] = ec;}else {if (e_to_col[e] == ec) return 0;}}}return 1;}tuple<int, vi, vvi> solve_largeN(int n, const vvi& es) {vi deg(n);rep(i, n) deg[i] = sz(es[i]);int deg_max = *max_element(all(deg));int K = max((int)ceil(sqrt(2 * (n - 1))), deg_max);vector<pii> deg_i(n);rep(i, n) deg_i[i] = { deg[i], i };sort(all(deg_i), greater<pii>());vvi col_to_vs;while (1) {col_to_vs = vvi(K);priority_queue<pii> q;rep(k, K) q.push({ K, k });bool ok = true;for (auto [d, i] : deg_i) {auto [rem, k] = q.top(); q.pop();// パスグラフだとこうなりやすいはずif (rem - d < 0) {ok = false;break;}col_to_vs[k].push_back(i);if (rem - d > 0) q.push({ rem - d, k });}if (ok) break;K++; // 高々 1 回のはず}dump("K:", K); dumpel(col_to_vs);vi res_v(n);rep(k, K) repe(v, col_to_vs[k]) res_v[v] = k;vector<vector<tuple<int, int, int>>> vcol_to_vjes(K);rep(k, K) {repe(v, col_to_vs[k]) {rep(j, sz(es[v])) {vcol_to_vjes[k].push_back({ v, j, es[v][j] });}}}dumpel(vcol_to_vjes);vvi res_e;// どこがバグってるかわからへん・・・while (1) {res_e = es;vector<vector<tuple<int, int, int>>> e_to_vjc(n - 1); int col = 0;vi k_all(K);iota(all(k_all), 0);shuffle(all(k_all), mt);repe(k, k_all) {int L = sz(vcol_to_vjes[k]);vi p;rep(l, L) {p.push_back(col);col = (col + 1) % K;}shuffle(all(p), mt);int pt = 0;for (auto [v, j, e] : vcol_to_vjes[k]) {e_to_vjc[e].push_back({ v, j, p[pt] });res_e[v][j] = p[pt];pt++;}}queue<int> e_ng;rep(e, n - 1) {auto [v, j, c] = e_to_vjc[e][0];auto [v2, j2, c2] = e_to_vjc[e][1];if (c == c2) {e_ng.push(e);}}while (!e_ng.empty()) {dump("e_ng:", e_ng);//rep(i, n) {// cout << i << ":" << res_v[i] << " |";// rep(j, sz(es[i])) cout << " " << es[i][j] << ":" << res_e[i][j];// cout << "\n";//}int e = e_ng.front(); e_ng.pop();int rd = rnd(mt);for (int hoge = 0; hoge < 2; hoge++) {int t = (hoge ^ rd) & 1;auto [v, j, c] = e_to_vjc[e][t];if (sz(es[v]) >= 2) {int j2 = rnd(mt) % sz(es[v]);while (j2 == j) j2 = rnd(mt) % sz(es[v]);int c2 = res_e[v][j2];res_e[v][j] = c2;e_to_vjc[e][t] = { v, j, c2 };int e2 = es[v][j2];res_e[v][j2] = c;if (get<0>(e_to_vjc[e2][0]) == v) {e_to_vjc[e2][0] = { v, j2, c };if (c == get<2>(e_to_vjc[e2][1])) {e_ng.push(e2);}}else {e_to_vjc[e2][1] = { v, j2, c };if (c == get<2>(e_to_vjc[e2][0])) {e_ng.push(e2);}}hoge = 2;}}}if (check(n, es, K, res_v, res_e)) break;}return { K, res_v, res_e };}void Main() {int n;cin >> n;vvi es(n);rep(i, n) {int c;cin >> c;es[i].resize(c);cin >> es[i];}--es;int K; vi res_v; vvi res_e;if (n <= 5) {tie(K, res_v, res_e) = solve_smallN(n, es);}else {tie(K, res_v, res_e) = solve_largeN(n, es);}dump("ok?:", check(n, es, K, res_v, res_e));// assert(check(n, es, K, res_v, res_e));cout << K << "\n";rep(i, n) {cout << res_v[i] + 1;repe(c, res_e[i]) cout << " " << c + 1;cout << "\n";}//rep(i, n) {// cout << i + 1 << ":" << res_v[i] + 1 << " |";// rep(j, sz(es[i])) cout << " " << es[i][j] + 1 << ":" << res_e[i][j] + 1;// cout << "\n";//}}int main() {// input_from_file("input.txt");// output_to_file("output.txt");mt = mt19937_64((int)time(NULL));mt = mt19937_64(1);int t = 1;cin >> t; // マルチテストケースの場合while (t--) {dump("------------------------------");Main();}}