結果
問題 | No.1030 だんしんぐぱーりない |
ユーザー |
|
提出日時 | 2020-04-17 22:33:40 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 264 ms / 2,000 ms |
コード長 | 5,326 bytes |
コンパイル時間 | 2,860 ms |
コンパイル使用メモリ | 215,212 KB |
最終ジャッジ日時 | 2025-01-09 20:20:57 |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 40 |
ソースコード
#include <bits/stdc++.h> // clang-format offusing Int = long long;#define REP_(i, a_, b_, a, b, ...) for (Int i = (a), lim##i = (b); i < lim##i; i++)#define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)struct SetupIO { SetupIO() { std::cin.tie(nullptr), std::ios::sync_with_stdio(false), std::cout << std::fixed << std::setprecision(13); } } setup_io;#ifndef _MY_DEBUG#define dump(...)#endif // clang-format on/*** author: knshnb* created: Fri Apr 17 22:21:54 JST 2020**/template <class T> inline bool chmin(T& a, const T& b) {if (a <= b) return false;a = b;return true;}template <class T> inline bool chmax(T& a, const T& b) {if (a >= b) return false;a = b;return true;}// edgeを貼ったあとにbuild()を忘れない!struct TreeDoubling {struct Edge {int to, len;}; // 場合に応じて書き換える、toは必須std::vector<std::vector<Edge>> g;int n, size; // MSB + 1int root;std::vector<int> depth;std::vector<std::vector<int>> parent; // ダミー頂点n(親もn)TreeDoubling(int n_) : g(n_), n(n_), size(64 - __builtin_clzll(n_) + 1), depth(n_) {parent.resize(size, std::vector<int>(n + 1, n));}void build(int root_ = 0) {auto dfs = [&](auto f, int v, int prv) -> void {for (Edge& e : g[v]) {if (e.to == prv) continue;depth[e.to] = depth[v] + e.len;parent[0][e.to] = v;f(f, e.to, v);}};root = root_;depth[root] = 0;dfs(dfs, root, -1);for (int k = 0; k < size - 1; k++) {for (int i = 0; i < n; i++) {parent[k + 1][i] = parent[k][parent[k][i]];}}}// vからd個分親にさかのぼった頂点、rootよりも上はnを返すint query(int v, int d) {int ret = v;for (int j = 0; j < size; j++) {if (d >> j & 1) ret = parent[j][ret];}return ret;}int lca(int u, int v) {if (depth[u] > depth[v]) std::swap(u, v);v = query(v, depth[v] - depth[u]);if (u == v) return u;for (int j = size - 1; j >= 0; j--) {if (parent[j][u] == parent[j][v]) continue;u = parent[j][u];v = parent[j][v];}assert(parent[0][u] == parent[0][v]);return parent[0][u];}int dist(int u, int v) { return depth[u] + depth[v] - depth[lca(u, v)] * 2; }};/// @docs src/DataStructure/SegmentTree.mdtemplate <class T, class F> struct SegmentTree {const F op;const T e;SegmentTree(F op_, T e_) : op(op_), e(e_) {}int n;std::vector<T> t;void set_by_identity(int n_) {n = n_;t.clear(), t.resize(2 * n, e);}void set_by_vector(const std::vector<T>& a) {n = a.size();t.clear(), t.resize(2 * n, e);for (int i = 0; i < n; i++) t[i + n] = a[i];build();}void build() {for (int i = n - 1; i; --i) t[i] = op(t[2 * i], t[2 * i + 1]);}T& operator[](int i) { return t[i + n]; }// [l, r)T query(int l, int r) const {assert(0 <= l && l <= r && r <= n);T resl = e, resr = e;for (l += n, r += n; l < r; l >>= 1, r >>= 1) {if (l & 1) resl = op(resl, t[l++]);if (r & 1) resr = op(t[--r], resr);}return op(resl, resr);}// i番目をxに変更void update(int i, const T& x) {assert(0 <= i && i < n);t[i += n] = x;while (i >>= 1) t[i] = op(t[2 * i], t[2 * i + 1]);}// i番目にxを作用 (a[i] = op(a[i], x))void operate(int i, const T& x) {assert(0 <= i && i < n);i += n;t[i] = op(t[i], x);while (i >>= 1) t[i] = op(t[2 * i], t[2 * i + 1]);}friend std::string to_string(const SegmentTree<T, F>& seg) {return to_string(std::vector<T>(seg.t.begin() + seg.n, seg.t.end()));}};template <class T, class F> auto make_segment_tree(F op, T e) { return SegmentTree<T, F>(op, e); }signed main() {int n, K, Q;std::cin >> n >> K >> Q;std::vector<Int> c(n), a(K);REP(i, n) std::cin >> c[i];REP(i, K) std::cin >> a[i], a[i]--;TreeDoubling g(n);for (int i = 0; i < n - 1; i++) {int u, v;std::cin >> u >> v;u--, v--;g.g[u].push_back({v, 1});g.g[v].push_back({u, 1});}g.build();std::vector<Int> mas(n, -1);auto dfs = [&](auto f, int v, int prv) -> void {chmax(mas[v], c[v]);for (auto& p : g.g[v]) {Int s = p.to;if (s == prv) continue;chmax(mas[s], mas[v]);f(f, s, v);}};dfs(dfs, 0, -1);auto seg = make_segment_tree([&g](Int i, Int j) -> Int {if (i == -1) return j;if (j == -1) return i;return g.lca(i, j);},-1LL);seg.set_by_vector(a);REP(q, Q) {Int t, x, y;std::cin >> t >> x >> y;if (t == 1) {seg.update(x - 1, y - 1);} else {std::cout << mas[seg.query(x - 1, y)] << "\n";}}}