結果
| 問題 | No.1038 TreeAddQuery |
| ユーザー |
 suisen
|
| 提出日時 | 2022-08-06 00:14:18 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
CE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 9,687 bytes |
| コンパイル時間 | 1,020 ms |
| コンパイル使用メモリ | 108,828 KB |
| 最終ジャッジ日時 | 2025-01-30 18:54:12 |
|
ジャッジサーバーID （参考情報） |
judge4 / judge3 |
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。（リジャッジ後のコンパイルエラーは公開されます）
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
コンパイルメッセージ
main.cpp: In member function ‘suisen::PointGetRangeContourOperate<T, F, mapping, composition, id>::value_type suisen::PointGetRangeContourOperate<T, F, mapping, composition, id>::get(int) const’:
main.cpp:155:95: error: ‘exchange’ is not a member of ‘std’
155 | for (auto it = _info[u].begin(); it != it_end; ++it) res = mapping(_subtrees[std::exchange(v, _par[v])][it->child_index].get(it->dep), res);
| ^~~~~~~~
main.cpp:11:1: note: ‘std::exchange’ is defined in header ‘<utility>’; did you forget to ‘#include <utility>’?
10 | #include <random>
+++ |+#include <utility>
11 | #include <tuple>
main.cpp: In member function ‘void suisen::PointGetRangeContourOperate<T, F, mapping, composition, id>::apply(int, int, int, const operator_type&)’:
main.cpp:174:32: error: ‘exchange’ is not a member of ‘std’
174 | _subtrees[std::exchange(v, _par[v])][it->child_index ^ 1].apply(ql - 1, qr - 1, f);
| ^~~~~~~~
main.cpp:174:32: note: ‘std::exchange’ is defined in header ‘<utility>’; did you forget to ‘#include <utility>’?
main.cpp: In instantiation of ‘struct suisen::PointGetRangeContourOperate<long long int, long long int, mapping, composition, id>::TreeNode’:
main.cpp:54:23: required from ‘void suisen::PointGetRangeContourOperate<T, F, mapping, composition, id>::add_edge(int, int) [with T = long long int; F = long long int; T (* mapping)(F, T) = mapping; F (* composition)(F, F) = composition; F (* id)() = id]’
main.cpp:233:19: required from here
main.cpp:47:56: error: invalid use of incomplete type ‘struct std::array<suisen::PointGetRangeContourOperate<long long int, long long int, mapping, composition, id>::AuxInfo, 30>’
47 | typename std::array<AuxInfo, 30>::iterator info_it;
|
ソースコード
#define PROBLEM "https://yukicoder.me/problems/no/1038"#include <iostream>#include <algorithm>#include <cassert>#include <cstdint>#include <deque>#include <queue>#include <random>#include <tuple>namespace suisen {template <typename T, typename F, T(*mapping)(F, T), F(*composition)(F, F), F(*id)()>struct PointGetRangeContourOperate {using value_type = T;using operator_type = F;private:struct InternalCommutativeDualSegmentTree {InternalCommutativeDualSegmentTree(int n = 0) : _n(n), _laz(2 * _n, id()) {}void apply(int l, int r, const operator_type& f) {l = std::max(0, l), r = std::min(r, _n);for (l += _n, r += _n; l < r; l >>= 1, r >>= 1) {if (l & 1) _laz[l] = composition(f, _laz[l]), ++l;if (r & 1) --r, _laz[r] = composition(f, _laz[r]);}}operator_type get(int i) const {operator_type res = id();for (i += _n; i; i >>= 1) res = composition(res, _laz[i]);return res;}private:int _n;std::vector<operator_type> _laz;};using sequence_type = InternalCommutativeDualSegmentTree;struct AuxInfo {int8_t child_index;int dep;};struct TreeNode {std::vector<int> adj;typename std::array<AuxInfo, 30>::iterator info_it;};public:PointGetRangeContourOperate(int n = 0, const value_type& fill_v = {}) : PointGetRangeContourOperate(std::vector<value_type>(n, fill_v)) {}PointGetRangeContourOperate(const std::vector<value_type>& a) : _n(a.size()), _dat(a), _nodes(_n), _par(2 * _n, -1), _info(_n), _subtrees(2 *_n), _ord(_n, -1) {}void add_edge(int u, int v) {_nodes[u].adj.push_back(v);_nodes[v].adj.push_back(u);}// O(NlogN)void build() {std::mt19937 rng{ std::random_device{}() };reorder(std::uniform_int_distribution<int>{ 0, _n - 1 }(rng));int new_node = _n;std::vector<int> sub_size(2 * _n, 0);std::vector<int> ctr(2 * _n, -1);std::vector<int> head(2 * _n), tail(2 * _n), link(2 * _n);for (int i = 0; i < _n; ++i) head[i] = tail[i] = i;auto rec = [&](auto rec, int r, int siz) -> int {int c = -1;auto get_centroid = [&](auto get_centroid, int u, int p) -> void {sub_size[u] = 1;for (int v : _nodes[u].adj) if (v != p) {get_centroid(get_centroid, v, u);if (v == c) {sub_size[u] = siz - sub_size[c];break;}sub_size[u] += sub_size[v];}if (c < 0 and sub_size[u] * 2 > siz) c = u;};get_centroid(get_centroid, r, -1);for (int v : _nodes[c].adj) {const int comp_size = sub_size[v];_nodes[v].adj.erase(std::find(_nodes[v].adj.begin(), _nodes[v].adj.end(), c));ctr[v] = rec(rec, v, comp_size);sub_size[v] = comp_size;}auto comp = [&](int i, int j) { return sub_size[i] > sub_size[j]; };std::priority_queue<int, std::vector<int>, decltype(comp)> pq{ comp };for (int v : _nodes[c].adj) {link[v] = -1;pq.push(v);}auto build_sequence = [&, this](const int root_head, const bool child_index) {std::deque<std::pair<int, int>> dq;for (int root = root_head; root >= 0; root = link[root]) dq.emplace_back(root, -1);int dep = 0, nxt = -1;while (dq.size()) {const auto [u, pu] = dq.front();dq.pop_front();if (u == nxt) ++dep, nxt = -1;auto& node = _nodes[u];*node.info_it++ = { child_index, dep };for (int v : node.adj) if (v != pu) {dq.emplace_back(v, u);if (nxt < 0) nxt = v;}}return sequence_type(++dep);};while (pq.size() >= 2) {const int u = pq.top(); pq.pop();const int v = pq.top(); pq.pop();if (pq.empty()) {_par[ctr[u]] = _par[ctr[v]] = c;_subtrees[c][0] = build_sequence(head[u], 0);_subtrees[c][1] = build_sequence(head[v], 1);break;}sub_size[new_node] = sub_size[u] + sub_size[v];ctr[new_node] = new_node;_par[ctr[u]] = _par[ctr[v]] = new_node;_subtrees[new_node][0] = build_sequence(head[u], 0);_subtrees[new_node][1] = build_sequence(head[v], 1);head[new_node] = head[u], tail[new_node] = tail[v], link[tail[u]] = head[v];pq.push(new_node);++new_node;}if (pq.size()) {int u = pq.top(); pq.pop();_par[ctr[u]] = c;_subtrees[c][0] = build_sequence(head[u], 0);}for (int v : _nodes[c].adj) _nodes[v].adj.push_back(c);return c;};rec(rec, 0, _n);_par.resize(new_node), _par.shrink_to_fit();_subtrees.resize(new_node), _subtrees.shrink_to_fit();}// O((logN)^2)value_type get(int u) const {u = _ord[u];value_type res = _dat[u];int v = _par[u];const auto it_end = _nodes[u].info_it;for (auto it = _info[u].begin(); it != it_end; ++it) res = mapping(_subtrees[std::exchange(v, _par[v])][it->child_index].get(it->dep),res);return res;}// O(1)void apply(int u, const operator_type& f) {u = _ord[u];_dat[u] = mapping(f, _dat[u]);}// O((logN)^2)void apply(int u, int dl, int dr, const operator_type& f) {u = _ord[u];if (dl <= 0 and 0 < dr) _dat[u] = mapping(f, _dat[u]);_subtrees[u][0].apply(dl - 1, dr - 1, f);_subtrees[u][1].apply(dl - 1, dr - 1, f);int v = _par[u];const auto it_end = _nodes[u].info_it;for (auto it = _info[u].begin(); it != it_end; ++it) {int ql = dl - it->dep - 1, qr = dr - it->dep - 1;if (v < _n and ql <= 0 and 0 < qr) _dat[v] = mapping(f, _dat[v]);_subtrees[std::exchange(v, _par[v])][it->child_index ^ 1].apply(ql - 1, qr - 1, f);}}private:int _n;std::vector<value_type> _dat;std::vector<TreeNode> _nodes;std::vector<int> _par;std::vector<std::array<AuxInfo, 30>> _info;std::vector<std::array<sequence_type, 2>> _subtrees;std::vector<int> _ord;void reorder(int s) {_ord.assign(_n, -1);int t = 0;std::deque<int> dq{ s };while (dq.size()) {int u = dq.front(); dq.pop_front();_ord[u] = t++;for (int v : _nodes[u].adj) if (_ord[v] < 0) dq.push_back(v);}assert(t == _n);std::vector<TreeNode> tmp(_n);for (int i = 0; i < _n; ++i) {for (int& e : _nodes[i].adj) e = _ord[e];_nodes[i].info_it = _info[_ord[i]].begin();tmp[_ord[i]] = std::move(_nodes[i]);}_nodes.swap(tmp);}};} // namespace suisenlong long mapping(long long f, long long x) {return f + x;}long long composition(long long x, long long y) {return x + y;}long long id() {return 0;}#include <chrono>int main() {std::ios::sync_with_stdio(false);std::cin.tie(nullptr);int n, q;std::cin >> n >> q;suisen::PointGetRangeContourOperate<long long, long long, mapping, composition, id> g(n, 0LL);for (int i = 0; i < n - 1; ++i) {int u, v;std::cin >> u >> v;--u, --v;g.add_edge(u, v);}std::vector<std::tuple<int, int, int>> qs(q);for (auto &[x, y, z] : qs) {std::cin >> x >> y >> z;--x, ++y;}std::vector<long long> ans(q);auto t1 = std::chrono::system_clock::now();g.build();auto t2 = std::chrono::system_clock::now();for (int i = 0; i < q; ++i) {const auto &[x, y, z] = qs[i];ans[i] = g.get(x);g.apply(x, 0, y, z);}auto t3 = std::chrono::system_clock::now();for (auto &e : ans) std::cout << e << '\n';auto build_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(t2 - t1).count();auto query_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(t3 - t2).count();std::cerr << "build : " << build_time_ms << " ms" << std::endl;std::cerr << "query : " << query_time_ms << " ms" << std::endl;return 0;}