結果
問題 | No.1038 TreeAddQuery |
ユーザー | suisen |
提出日時 | 2022-08-05 20:45:30 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 553 ms / 4,000 ms |
コード長 | 10,332 bytes |
コンパイル時間 | 1,739 ms |
コンパイル使用メモリ | 109,656 KB |
実行使用メモリ | 64,464 KB |
最終ジャッジ日時 | 2024-09-15 16:21:44 |
合計ジャッジ時間 | 14,602 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 7 ms
5,376 KB |
testcase_04 | AC | 6 ms
5,376 KB |
testcase_05 | AC | 7 ms
5,376 KB |
testcase_06 | AC | 6 ms
5,376 KB |
testcase_07 | AC | 8 ms
5,376 KB |
testcase_08 | AC | 428 ms
52,672 KB |
testcase_09 | AC | 444 ms
52,512 KB |
testcase_10 | AC | 441 ms
52,836 KB |
testcase_11 | AC | 439 ms
52,728 KB |
testcase_12 | AC | 445 ms
53,048 KB |
testcase_13 | AC | 553 ms
64,316 KB |
testcase_14 | AC | 540 ms
56,744 KB |
testcase_15 | AC | 488 ms
54,928 KB |
testcase_16 | AC | 488 ms
54,352 KB |
testcase_17 | AC | 493 ms
53,732 KB |
testcase_18 | AC | 404 ms
62,016 KB |
testcase_19 | AC | 382 ms
60,752 KB |
testcase_20 | AC | 341 ms
60,968 KB |
testcase_21 | AC | 325 ms
60,436 KB |
testcase_22 | AC | 340 ms
58,228 KB |
testcase_23 | AC | 313 ms
57,300 KB |
testcase_24 | AC | 331 ms
53,340 KB |
testcase_25 | AC | 504 ms
64,464 KB |
testcase_26 | AC | 519 ms
63,664 KB |
ソースコード
#include <iostream> #include <algorithm> #include <array> #include <cassert> #include <deque> #include <iostream> #include <queue> #include <utility> #include <vector> namespace suisen { namespace default_operator { template <typename T> auto zero() -> decltype(T { 0 }) { return T { 0 }; } template <typename T> auto one() -> decltype(T { 1 }) { return T { 1 }; } template <typename T> auto add(const T &x, const T &y) -> decltype(x + y) { return x + y; } template <typename T> auto sub(const T &x, const T &y) -> decltype(x - y) { return x - y; } template <typename T> auto mul(const T &x, const T &y) -> decltype(x * y) { return x * y; } template <typename T> auto div(const T &x, const T &y) -> decltype(x / y) { return x / y; } template <typename T> auto mod(const T &x, const T &y) -> decltype(x % y) { return x % y; } template <typename T> auto neg(const T &x) -> decltype(-x) { return -x; } template <typename T> auto inv(const T &x) -> decltype(one<T>() / x) { return one<T>() / x; } } // default_operator namespace default_operator_noref { template <typename T> auto zero() -> decltype(T { 0 }) { return T { 0 }; } template <typename T> auto one() -> decltype(T { 1 }) { return T { 1 }; } template <typename T> auto add(T x, T y) -> decltype(x + y) { return x + y; } template <typename T> auto sub(T x, T y) -> decltype(x - y) { return x - y; } template <typename T> auto mul(T x, T y) -> decltype(x * y) { return x * y; } template <typename T> auto div(T x, T y) -> decltype(x / y) { return x / y; } template <typename T> auto mod(T x, T y) -> decltype(x % y) { return x % y; } template <typename T> auto neg(T x) -> decltype(-x) { return -x; } template <typename T> auto inv(T x) -> decltype(one<T>() / x) { return one<T>() / x; } } // default_operator } // namespace suisen namespace suisen { template <typename T, T(*_add)(T, T) = default_operator_noref::add<T>, T(*_zero)() = default_operator_noref::zero<T>, T(*_neg)(T) = default_operator_noref::neg<T>> struct PointGetRangeContourAddOnTree { using value_type = T; private: struct InternalFenwickTree { InternalFenwickTree() = default; InternalFenwickTree(int n) : _n(n), _dat(_n + 1, _zero()) {} value_type get(int i) const { value_type res = _zero(); for (++i; i; i -= i & -i) res = _add(res, _dat[i]); return res; } void add(int l, int r, const value_type& val) { l = std::max(0, l), r = std::min(r, _n); if (l < r) add(l, val), add(r, _neg(val)); } private: int _n; std::vector<value_type> _dat; void add(int r, const value_type& val) { for (++r; r <= _n; r += r & -r) _dat[r] = _add(_dat[r], val); } }; using sequence_type = InternalFenwickTree; struct AuxInfo { int8_t child_index; int dist; }; struct TreeNode { std::vector<int> adj; typename std::array<AuxInfo, 30>::iterator info_it; }; public: PointGetRangeContourAddOnTree(int n = 0, const value_type& fill_value = _zero()) : PointGetRangeContourAddOnTree(std::vector<value_type>(n, fill_value)) {} PointGetRangeContourAddOnTree(const std::vector<value_type>& dat) : _n(dat.size()), _dat(dat), _nodes(_n), _par(_n, -1), _info(_n), _subtrees(_n) { _par.reserve(2 * _n); _subtrees.reserve(2 * _n); for (int i = 0; i < _n; ++i) { _nodes[i].info_it = _info[i].begin(); } } void add_edge(int u, int v) { _nodes[u].adj.push_back(v); _nodes[v].adj.push_back(u); } void build() { std::vector<int> sub_size(_n, 0); std::vector<int> ctr(_n, -1); sub_size.reserve(2 * _n); ctr.reserve(2 * _n); std::vector<std::vector<int>> ch(_n); ch.reserve(2 * _n); auto merge = [&](std::vector<int>&& l, std::vector<int>&& r) -> std::vector<int>&& { if (l.size() > r.size()) std::swap(l, r); for (int v : l) r.push_back(v); return std::move(r); }; 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) { ch[v] = { v }; pq.push(v); } auto build_sequence = [this](const std::vector<int>& roots, const bool child_index) { std::deque<std::pair<int, int>> dq; for (int r : roots) dq.emplace_back(r, -1); int dist = -1, nxt = roots.front(); while (dq.size()) { const auto [u, pu] = dq.front(); dq.pop_front(); if (u == nxt) ++dist, nxt = -1; auto& node = _nodes[u]; *node.info_it++ = { child_index, dist }; for (int v : node.adj) if (v != pu) { dq.emplace_back(v, u); if (nxt < 0) nxt = v; } } return sequence_type(dist + 1); }; 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(ch[u], 0); _subtrees[c][1] = build_sequence(ch[v], 1); break; } const int new_node = sub_size.size(); sub_size.push_back(sub_size[u] + sub_size[v]); ctr.push_back(new_node); _par.push_back(-1); _par[ctr[u]] = _par[ctr[v]] = new_node; _subtrees.emplace_back(); _subtrees[new_node][0] = build_sequence(ch[u], 0); _subtrees[new_node][1] = build_sequence(ch[v], 1); ch.push_back(merge(std::move(ch[u]), std::move(ch[v]))); ch[u].clear(), ch[u].shrink_to_fit(); ch[v].clear(), ch[v].shrink_to_fit(); pq.push(new_node); } if (pq.size()) { int u = pq.top(); pq.pop(); _par[ctr[u]] = c; _subtrees[c][0] = build_sequence(ch[u], 0); } for (int v : _nodes[c].adj) _nodes[v].adj.push_back(c); return c; }; rec(rec, 0, _n); } value_type get(int u) const { 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 = _add(res, _subtrees[std::exchange(v, _par[v])][it->child_index].get(it->dist)); } return res; } void set(int u, const value_type& new_val) { add(u, _add(new_val, _neg(get(u)))); } void add(int u, const value_type &val) { _nodes[u].dat = _add(_dat[u], val); } void add(int u, int dl, int dr, const value_type &val) { if (dl <= 0 and 0 < dr) _dat[u] = _add(_dat[u], val); _subtrees[u][0].add(dl - 1, dr - 1, val); _subtrees[u][1].add(dl - 1, dr - 1, val); 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->dist - 2, qr = dr - it->dist - 2; if (v < _n and ql <= -1 and -1 < qr) _dat[v] = _add(_dat[v], val); _subtrees[std::exchange(v, _par[v])][it->child_index ^ 1].add(ql, qr, val); } } 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; }; } // namespace suisen int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); int n, q; std::cin >> n >> q; suisen::PointGetRangeContourAddOnTree<long long> g(n); for (int i = 0; i < n - 1; ++i) { int u, v; std::cin >> u >> v; --u, --v; g.add_edge(u, v); } g.build(); for (int i = 0; i < q; ++i) { int x, y, z; std::cin >> x >> y >> z; --x, ++y; std::cout << g.get(x) << '\n'; g.add(x, 0, y, z); } return 0; }