結果
| 問題 |
No.1030 だんしんぐぱーりない
|
| コンテスト | |
| ユーザー |
🍮かんプリン
|
| 提出日時 | 2020-09-30 17:52:25 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 347 ms / 2,000 ms |
| コード長 | 4,513 bytes |
| コンパイル時間 | 1,765 ms |
| コンパイル使用メモリ | 179,056 KB |
| 実行使用メモリ | 18,520 KB |
| 最終ジャッジ日時 | 2024-07-06 05:31:47 |
| 合計ジャッジ時間 | 13,704 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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
/**
* @FileName a.cpp
* @Author kanpurin
* @Created 2020.09.30 17:52:17
**/
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
template < class Monoid >
struct SegmentTree {
private:
using Func = std::function< Monoid(Monoid, Monoid) >;
Func F;
Monoid UNITY;
int n;
std::vector< Monoid > node;
int _binary_search(int a, int b, const std::function<bool(Monoid)> &f, Monoid &s, int k = 0, int l = 0, int r = -1) {
if (r < 0) r = n;
if (r <= a || b <= l) return n;
if (a <= l && r <= b && !f(F(s,node[k]))) {
s = F(s,node[k]);
return n;
}
if (l == r - 1) {s = F(s,node[k]); return l;}
int ret = _binary_search(a, b, f, s, 2 * k + 1, l, (r - l) / 2 + l);
return ret != n ? ret : _binary_search(a, b, f, s, 2 * k + 2, (r - l) / 2 + l, r);
}
public:
SegmentTree() {}
SegmentTree(const std::vector< Monoid > &v, const Func f, const Monoid &unity) {
F = f;
UNITY = unity;
int sz = v.size();
n = 1;
while (n < sz) n <<= 1;
node.resize(n * 2 - 1, UNITY);
for (int i = 0; i < sz; i++) node[i + n - 1] = v[i];
build();
}
SegmentTree(int m, const Monoid &val, const Func f, const Monoid &unity) {
F = f;
UNITY = unity;
n = 1;
while (n < m) n <<= 1;
node.resize(n * 2 - 1, UNITY);
if (val != UNITY) {
for (int i = 0; i < m; i++) node[i + n - 1] = val;
build();
}
}
void set(int k, const Monoid &x) {
node[n + k - 1] = x;
}
void build() {
for (int i = n - 2; i >= 0; i--) node[i] = F(node[2 * i + 1], node[2 * i + 2]);
}
void update_query(int x, const Monoid &val) {
if (x >= n || x < 0) return;
x += n - 1;
node[x] = val;
while (x > 0) {
x = (x - 1) >> 1;
node[x] = F(node[2 * x + 1], node[2 * x + 2]);
}
}
Monoid get_query(int l, int r) {
Monoid L = UNITY, R = UNITY;
if (l < 0) l = 0;
if (r < 0) return UNITY;
if (l >= n) return UNITY;
if (r >= n) r = n;
for (l += n, r += n; l < r; l >>= 1, r >>= 1) {
if (l & 1) L = F(L, node[l++ - 1]);
if (r & 1) R = F(node[--r - 1], R);
}
return F(L, R);
}
int binary_search(int l, int r, const std::function<bool(Monoid)> &f) {
Monoid s = UNITY;
int ret = _binary_search(l,r,f,s);
return ret != n ? ret : -1;
}
Monoid operator[](int x) const {
return node[n + x - 1];
}
int size() {
return n;
}
void print() {
for (int i = 0; i < n; i++) {
std::cout << i << "\t: " << node[n + i - 1] << std::endl;
}
}
};
vector<vector<int>> g;
vector<int> c,a;
vector<int> l,r;
vector<int> saidai;
vector<pair<int,int>> euler_tour;
void dfs(int v, int p = -1, int depth = 0) {
if (p != -1) saidai[v] = max(saidai[v],saidai[p]);
euler_tour.push_back({depth,v});
l[v] = euler_tour.size()-1;
for(int u : g[v]) {
if (u == p) continue;
dfs(u,v,depth+1);
euler_tour.push_back({depth,v});
}
r[v] = euler_tour.size()-1;
}
int main() {
int n,k,q;cin >> n >> k >> q;
g.resize(n);
c.resize(n);
a.resize(k);
l.resize(n);
r.resize(n);
for (int i = 0; i < n; i++) {
cin >> c[i];
}
saidai = c;
for (int i = 0; i < k; i++) {
cin >> a[i];
}
for (int i = 0; i < n-1; i++) {
int e,f;cin >> e >> f;
g[e-1].push_back(f-1);
g[f-1].push_back(e-1);
}
dfs(0);
constexpr int INF = 1e9 + 6;
SegmentTree<int> now_l(k,INF,[](int a,int b){return min(a,b);},INF);
SegmentTree<int> now_r(k,0,[](int a,int b){return max(a,b);},0);
for (int i = 0; i < k; i++) {
now_l.set(i,l[a[i]-1]);
now_r.set(i,r[a[i]-1]);
}
now_l.build(); now_r.build();
SegmentTree<pair<int,int>> tour(euler_tour,[](pair<int,int> a, pair<int,int> b){return min(a,b);},{INF,INF});
while(q--) {
int t,x,y;cin >> t >> x >> y;
x--;y--;
if (t == 1) {
now_l.update_query(x,l[y]);
now_r.update_query(x,r[y]);
}
else {
cout << saidai[tour.get_query(now_l.get_query(x,y+1),now_r.get_query(x,y+1)+1).second] << endl;
}
}
return 0;
}
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