結果
問題 | No.1030 だんしんぐぱーりない |
ユーザー | KoD |
提出日時 | 2020-06-30 20:36:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 7,805 bytes |
コンパイル時間 | 1,296 ms |
コンパイル使用メモリ | 98,092 KB |
実行使用メモリ | 19,872 KB |
最終ジャッジ日時 | 2024-09-13 08:53:24 |
合計ジャッジ時間 | 7,930 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
12,320 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | RE | - |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 313 ms
16,640 KB |
testcase_06 | TLE | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
ソースコード
#include <iostream> #include <algorithm> #include <utility> #include <numeric> #include <vector> #include <array> template <class T, class U> inline bool chmin(T &lhs, const U &rhs) { if (lhs > rhs) { lhs = rhs; return true; } return false; } template <class T, class U> inline bool chmax(T &lhs, const U &rhs) { if (lhs < rhs) { lhs = rhs; return true; } return false; } struct range { using itr = int64_t; struct iterator { itr i; constexpr iterator(itr i_) noexcept : i(i_) { } constexpr void operator ++ () noexcept { ++i; } constexpr itr operator * () const noexcept { return i; } constexpr bool operator != (iterator x) const noexcept { return i != x.i; } }; const iterator l, r; constexpr range(itr l_, itr r_) noexcept : l(l_), r(std::max(l_, r_)) { } constexpr iterator begin() const noexcept { return l; } constexpr iterator end() const noexcept { return r; } }; struct revrange { using itr = int64_t; struct iterator { itr i; constexpr iterator(itr i_) noexcept : i(i_) { } constexpr void operator ++ () noexcept { --i; } constexpr itr operator * () const noexcept { return i; } constexpr bool operator != (iterator x) const noexcept { return i != x.i; } }; const iterator l, r; constexpr revrange(itr l_, itr r_) noexcept : l(l_ - 1), r(std::max(l_, r_) - 1) { } constexpr iterator begin() const noexcept { return r; } constexpr iterator end() const noexcept { return l; } }; class heavy_light_decomposition { public: using size_type = int32_t; private: std::vector<std::vector<size_type>> graph; std::vector<size_type> size, parent, head; size_type index; void calc_size(size_type u, size_type p) { size[u] = 1; for (size_type v: graph[u]) { if (v != p) { calc_size(v, u); size[u] += size[v]; } } } void decompose(size_type u, size_type p, size_type h) { label[u] = index; head[u] = h; parent[u] = p; ++index; size_type max = -1, heavy = -1; for (size_type v : graph[u]) { if (v != p) { if (max < size[v]) { max = size[v]; heavy = v; } } } if (heavy == -1) { return; } decompose(heavy, u, h); for (size_type v : graph[u]) { if (v != p && v != heavy) { decompose(v, u, v); } } } public: std::vector<size_type> label; heavy_light_decomposition() { } heavy_light_decomposition(size_type size_) { init(size_); } void init(size_type size_) { graph.assign(size_, { }); size.assign(size_, 0); parent.assign(size_, 0); head.assign(size_, 0); label.assign(size_, 0); } void add_edge(size_type u, size_type v) { graph[u].push_back(v); graph[v].push_back(u); } void build() { index = 0; calc_size(0, -1); decompose(0, -1, 0); } template <class T> void each_edge(size_type u, size_type v, const T &func) const { while (true) { if (label[u] > label[v]) { std::swap(u, v); } if (head[u] == head[v]) { if (label[u] + 1 <= label[v]) { func(label[u] + 1, label[v]); } return; } func(label[head[v]], label[v]); v = parent[head[v]]; } } template <class T> void each_vertex(size_type u, size_type v, const T &func) const { while (true) { if (label[u] > label[v]) { std::swap(u, v); } if (head[u] == head[v]) { func(label[u], label[v]); return; } func(label[head[v]], label[v]); v = parent[head[v]]; } } size_type lca(size_type u, size_type v) const { if (label[u] > label[v]) { std::swap(u, v); } while (label[u] <= label[v]) { if (head[u] == head[v]) { return u; } v = parent[head[v]]; } return v; } }; template <class Monoid> class segment_tree { public: using monoid = Monoid; using value_type = typename Monoid::type; using size_type = size_t; private: std::vector<value_type> M_tree; void M_fix_change(const size_type index) { M_tree[index] = monoid::operation(M_tree[index << 1 | 0], M_tree[index << 1 | 1]); } public: segment_tree() = default; explicit segment_tree(const size_type size) { initialize(size); } template <class InputIterator> explicit segment_tree(InputIterator first, InputIterator last) { construct(first, last); } void initialize(const size_type size) { clear(); M_tree.assign(size << 1, monoid::identity()); } template <class InputIterator> void construct(InputIterator first, InputIterator last) { clear(); const size_type size = std::distance(first, last); M_tree.reserve(size << 1); M_tree.assign(size, monoid::identity()); std::copy(first, last, std::back_inserter(M_tree)); for (size_type index = size - 1; index != 0; --index) { M_fix_change(index); } } void assign(size_type index, const value_type &value) { index += size(); M_tree[index] = value; while (index != 1) { index >>= 1; M_fix_change(index); } } const value_type& at(size_type index) const { return M_tree[index + size()]; } value_type fold(size_type first, size_type last) const { first += size(); last += size(); value_type fold_l = monoid::identity(); value_type fold_r = monoid::identity(); while (first != last) { if (first & 1) { fold_l = monoid::operation(fold_l, M_tree[first]); ++first; } if (last & 1) { --last; fold_r = monoid::operation(M_tree[last], fold_r); } first >>= 1; last >>= 1; } return monoid::operation(fold_l, fold_r); } void clear() { M_tree.clear(); M_tree.shrink_to_fit(); } size_type size() const { return M_tree.size() >> 1; } }; using i32 = int32_t; using i64 = int64_t; using u32 = uint32_t; using u64 = uint64_t; constexpr i32 inf32 = (i32(1) << 30) - 1; constexpr i64 inf64 = (i64(1) << 62) - 1; template <class Func> struct fix_point: private Func { explicit constexpr fix_point(Func &&func): Func(std::forward<Func>(func)) { } template <class... Args> constexpr decltype(auto) operator () (Args &&... args) const { return Func::operator()(*this, std::forward<Args>(args)...); } }; struct monoid { static inline heavy_light_decomposition *hld = nullptr; using type = std::pair<i32, bool>; static type identity() { return { 0, false}; } static type operation(const type& v1, const type& v2) { if (!v1.second) return v2; if (!v2.second) return v1; return { hld -> lca(v1.first, v2.first), true }; } }; int main() { i32 N, K, Q; std::cin >> N >> K >> Q; std::vector<i32> vivace(N); std::vector<std::vector<i32>> graph(N); for (auto &x: vivace) { std::cin >> x; } std::vector<i32> lives(K); for (i32 &x: lives) { std::cin >> x; --x; } heavy_light_decomposition hld(N); monoid::hld = &hld; for (auto i: range(0, N - 1)) { i32 a, b; std::cin >> a >> b; --a; --b; graph[a].push_back(b); graph[b].push_back(a); hld.add_edge(a, b); } hld.build(); segment_tree<monoid> seg(N); for (i32 i: range(0, K)) { seg.assign(i, { lives[i], true }); } fix_point([&](auto dfs, i32 u, i32 p) -> void { if (p != -1) { chmax(vivace[u], vivace[p]); } for (auto v: graph[u]) { if (v != p) { dfs(v, u); } } })(0, -1); while (Q--) { i32 type; std::cin >> type; if (type == 1) { i32 x, y; std::cin >> x >> y; --x; --y; seg.assign(x, { y, true }); } else { i32 l, r; std::cin >> l >> r; --l; std::cout << vivace[seg.fold(l, r).first] << '\n'; } } return 0; }