結果
| 問題 |
No.2786 RMQ on Grid Path
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-06-14 22:24:53 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2,883 ms / 6,000 ms |
| コード長 | 3,991 bytes |
| コンパイル時間 | 2,915 ms |
| コンパイル使用メモリ | 267,212 KB |
| 実行使用メモリ | 42,876 KB |
| 最終ジャッジ日時 | 2024-06-14 22:25:50 |
| 合計ジャッジ時間 | 56,491 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 35 |
ソースコード
#line 1 "cp_templates/template/template.hpp"
# include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
const double pi = acos(-1);
template<class T>constexpr T inf() { return ::std::numeric_limits<T>::max(); }
template<class T>constexpr T hinf() { return inf<T>() / 2; }
template <typename T_char>T_char TL(T_char cX) { return tolower(cX); }
template <typename T_char>T_char TU(T_char cX) { return toupper(cX); }
template<class T> bool chmin(T& a,T b) { if(a > b){a = b; return true;} return false; }
template<class T> bool chmax(T& a,T b) { if(a < b){a = b; return true;} return false; }
int popcnt(unsigned long long n) { int cnt = 0; for (int i = 0; i < 64; i++)if ((n >> i) & 1)cnt++; return cnt; }
int d_sum(ll n) { int ret = 0; while (n > 0) { ret += n % 10; n /= 10; }return ret; }
int d_cnt(ll n) { int ret = 0; while (n > 0) { ret++; n /= 10; }return ret; }
ll gcd(ll a, ll b) { if (b == 0)return a; return gcd(b, a%b); };
ll lcm(ll a, ll b) { ll g = gcd(a, b); return a / g*b; };
ll MOD(ll x, ll m){return (x%m+m)%m; }
ll FLOOR(ll x, ll m) {ll r = (x%m+m)%m; return (x-r)/m; }
template<class T> using dijk = priority_queue<T, vector<T>, greater<T>>;
# define all(qpqpq) (qpqpq).begin(),(qpqpq).end()
# define UNIQUE(wpwpw) (wpwpw).erase(unique(all((wpwpw))),(wpwpw).end())
# define LOWER(epepe) transform(all((epepe)),(epepe).begin(),TL<char>)
# define UPPER(rprpr) transform(all((rprpr)),(rprpr).begin(),TU<char>)
# define rep(i,upupu) for(ll i = 0, i##_len = (upupu);(i) < (i##_len);(i)++)
# define reps(i,opopo) for(ll i = 1, i##_len = (opopo);(i) <= (i##_len);(i)++)
# define len(x) ((ll)(x).size())
# define bit(n) (1LL << (n))
# define pb push_back
# define exists(c, e) ((c).find(e) != (c).end())
struct INIT{
INIT(){
std::ios::sync_with_stdio(false);
std::cin.tie(0);
cout << fixed << setprecision(20);
}
}INIT;
namespace mmrz {
void solve();
}
int main(){
mmrz::solve();
}
#line 2 "2786.cpp"
// #include "./cp_templates/template/debug.hpp"
// #define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
// #define debug(...) (static_cast<void>(0))
#line 1 "cp_templates/data_structure/union_find.hpp"
struct union_find {
vector<int> v;
int g_size;
union_find(size_t size) : v(size, -1), g_size(size) {}
int root(int x){
return (v[x] < 0 ? x : v[x] = root(v[x]));
}
bool is_root(int x){
return root(x) == x;
}
bool unite(int x, int y){
x = root(x);
y = root(y);
if(x != y){
if(v[x] > v[y])swap(x, y);
v[x] += v[y];
v[y] = x;
g_size--;
return true;
}
return false;
}
bool is_same(int x,int y){
return root(x) == root(y);
}
int get_size(int x){
x = root(x);
return -v[x];
}
int groups_size(){
return g_size;
}
};
#line 7 "2786.cpp"
using namespace mmrz;
void SOLVE(){
int h, w;
cin >> h >> w;
vector<vector<int>> a(h, vector<int>(w));
vector<vector<pair<int, int>>> e(h*w+1);
rep(i, h)rep(j, w){
cin >> a[i][j];
e[a[i][j]].pb({i, j});
}
int q;
cin >> q;
vector<int> rs(q), cs(q), rt(q), ct(q);
rep(i, q){
cin >> rs[i] >> cs[i] >> rt[i] >> ct[i];
rs[i]--, cs[i]--, rt[i]--, ct[i]--;
}
auto within = [&](int y, int x) -> bool {
return 0 <= y && y < h && 0 <= x && x < w;
};
int dy[] = {1, 0, -1, 0};
int dx[] = {0, 1, 0, -1};
vector<int> ng(q, 0), ok(q, h*w+1);
rep(_, 20){
map<int, vector<int>> judge;
rep(i, q)judge[(ng[i]+ok[i])/2].pb(i);
union_find uf(h*w);
rep(cst, h*w+1){
for(auto [y, x] : e[cst]){
rep(dir, 4){
int ny = y+dy[dir];
int nx = x+dx[dir];
if(not within(ny, nx))continue;
if(cst < a[ny][nx])continue;
uf.unite(y*w+x, ny*w+nx);
}
}
for(auto idx : judge[cst]){
(uf.is_same(rs[idx]*w+cs[idx], rt[idx]*w+ct[idx]) ? ok[idx] : ng[idx]) = cst;
}
}
}
rep(i, q){
cout << ok[i] << endl;
}
}
void mmrz::solve(){
int t = 1;
//cin >> t;
while(t--)SOLVE();
}