結果

問題 No.2786 RMQ on Grid Path
ユーザー soto800
提出日時 2024-06-15 18:10:55
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
TLE  
(最新)
AC  
(最初)
実行時間 -
コード長 8,989 bytes
コンパイル時間 10,054 ms
コンパイル使用メモリ 279,884 KB
最終ジャッジ日時 2025-02-21 22:54:35
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 2
other AC * 34 TLE * 1
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
#define lli long long int
#define REP(i, s, n) for (lli i = s; i < n; i++)
#define INF (1LL << 62)
#define mp(a, b) make_pair(a, b)
#define SORT(V) sort(V.begin(), V.end())
#define PI (3.141592653589794)
#define TO_STRING(VariableName) #VariableName
#define LOG1(x) \
if (DEBUG) \
cout << TO_STRING(x) << "=" << x << " " << endl;
#define LOG2(x, y) \
if (DEBUG) \
cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y << endl;
#define LOG3(x, y, z) \
if (DEBUG) \
cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y << " " \
<< TO_STRING(z) << "=" << z << endl;
#define LOG4(w, x, y, z) \
if (DEBUG) \
cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x << " " \
<< TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" << z \
<< endl;
#define LOG5(w, x, y, z, a) \
if (DEBUG) \
cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x << " " \
<< TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" << z << " " \
<< TO_STRING(a) << "=" << a << endl;
#define LOG6(w, x, y, z, a, b) \
if (DEBUG) \
cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x << " " \
<< TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" << z << " " \
<< TO_STRING(a) << "=" << a << " " << TO_STRING(b) << "=" << b \
<< endl;
#define overload6(a, b, c, d, e, f, g, ...) g
#define LOG(...) \
overload6(__VA_ARGS__, LOG6, LOG5, LOG4, LOG3, LOG2, LOG1)(__VA_ARGS__)
template <class T> bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> bool chmin(T &a, const T &b) {
if (b < a) {
a = b;
return 1;
}
return 0;
}
mt19937 engine;
std::chrono::system_clock::time_point start, endTime;
#define DEBUG 1
// checker https://atcoder.jp/contests/abc264/tasks/abc264_e
struct UnionFind {
vector<int> par; // par[i]:i () par[3] = 2 : 32
vector<bool> isOk;
vector<lli> siz; // (1 )
lli N;
UnionFind(int N)
: par(N), isOk(N), siz(N) { //
for (int i = 0; i < N; i++) {
par[i] = i;
isOk[i] = false;
siz[i] = 1;
}
this->N = N;
}
int root(int x) { // xroot(x) = {x}
if (par[x] == x)
return x;
return par[x] = root(par[x]);
}
void setOk(lli i) { isOk[i] = isOk[root(i)] = true; }
bool isCheckOk(lli i) { return isOk[root(i)]; }
void unite(int x, int y) { // xy
int rx = root(x); // xrx
int ry = root(y); // yry
if (rx == ry)
return; // xy(=)
if (siz[rx] < siz[ry])
swap(rx, ry);
siz[rx] += siz[ry];
par[ry] =
rx; // xy(=)xrxyry
if (isOk[rx] || isOk[ry]) {
isOk[ry] = true;
isOk[rx] = true;
}
}
bool same(int x, int y) { // 2x, ytrue
int rx = root(x);
int ry = root(y);
return rx == ry;
}
lli size(lli x) { return siz[root(x)]; }
};
static const int max_n = 1 << 15; //a_i
int seg_tree[2 * max_n];
int n;
//
void init(int n_) {
//2
n = 1;
while (n < n_)
n *= 2;
// RMQINT_MAX
REP(i, 0, 2 * n) seg_tree[i] = 0;
}
// indexx
void update(int index, int x) {
index +=
n - 1; //1seg_treen
seg_tree[index] = x;
while (index > 0) {
index = (index - 1) / 2; //index
seg_tree[index] = max(seg_tree[2 * index + 1], seg_tree[2 * index + 2]);
}
}
//[a,b)
// indexseg_treeleft,rightseg_tree[index]
// query(a,b,0,0,n)
int query(int a, int b, int index, int left, int right) {
//[a,b)INT_MAX
if (a >= right || b <= left)
return 0;
//[a,b)
if (a <= left && b >= right)
return seg_tree[index];
//seg_tree[index]2
int value_1 = query(a, b, 2 * index + 1, left, (left + right) / 2);
int value_2 = query(a, b, 2 * index + 2, (left + right) / 2, right);
return max(value_1, value_2);
}
lli a[800][800];
lli di[2] = {1, 0};
lli dj[2] = {0, 1};
lli H, W;
//
// eulerNode
void eulerDfs(lli now, lli from, const vector<vector<lli>> &Graph,
vector<lli> &eulerNode) {
eulerNode.push_back(now);
for (auto next : Graph[now]) {
if (next == from)
continue;
eulerDfs(next, now, Graph, eulerNode);
eulerNode.push_back(now);
}
}
void solve() {
// write your code here
cin >> H >> W;
REP(i, 0, H) {
REP(j, 0, W) { cin >> a[i][j]; }
}
using P = pair<lli, pair<lli, lli>>;
priority_queue<P, vector<P>, greater<P>> pq;
lli maxA = 0;
REP(i, 0, H) {
REP(j, 0, W) {
REP(dir, 0, 2) {
lli ni = i + di[dir];
lli nj = j + dj[dir];
if (ni < H && nj < W) {
pq.push({max(a[i][j], a[ni][nj]), {i * W + j, ni * W + nj}});
chmax(maxA, max(a[i][j], a[ni][nj]));
}
}
}
}
lli Q;
cin >> Q;
vector<pair<lli, lli>> query;
REP(i, 0, Q) {
lli i1, j1, i2, j2;
cin >> i1 >> j1 >> i2 >> j2;
i1--;
j1--;
i2--;
j2--;
query.push_back({i1 * W + j1, i2 * W + j2});
}
vector<lli> ans(Q, -1);
vector<pair<lli, lli>> querySmallAndLarge;
REP(i, 0, Q) { querySmallAndLarge.push_back({0, maxA + 1}); }
while (true) {
//
priority_queue<pair<lli, lli>, vector<pair<lli, lli>>,
greater<pair<lli, lli>>>
pq2;
bool update = false;
REP(i, 0, Q) {
if (querySmallAndLarge[i].first + 1 < querySmallAndLarge[i].second) {
update = true;
pq2.push(
{(querySmallAndLarge[i].first + querySmallAndLarge[i].second) / 2,
i});
} else {
ans[i] = querySmallAndLarge[i].second;
}
}
if (!update)
break;
auto nowPQ = pq;
UnionFind uf(H * W);
REP(i, 0, maxA + 1) {
while (nowPQ.size() && nowPQ.top().first <= i) {
auto now = nowPQ.top();
nowPQ.pop();
lli nowCost = now.first;
auto firstP = now.second.first;
auto secondP = now.second.second;
if (!uf.same(firstP, secondP)) {
uf.unite(firstP, secondP);
}
}
while (pq2.size() && pq2.top().first == i) {
auto now = pq2.top();
pq2.pop();
lli queryNum = now.second;
lli target = now.first;
if (uf.same(query[queryNum].first, query[queryNum].second)) {
// ans[queryNum] = target;
querySmallAndLarge[queryNum].second = target;
} else {
querySmallAndLarge[queryNum].first = target;
}
}
}
}
REP(i, 0, Q) { cout << ans[i] << endl; }
}
// Generated by 2.13.0 https://github.com/kyuridenamida/atcoder-tools (tips:
// You use the default template now. You can remove this line by using your
// custom template)
int main() {
// Failed to predict input format
lli N = 1;
// cin >> N;
while (N--)
solve();
return 0;
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0