結果
| 問題 |
No.2696 Sign Creation
|
| コンテスト | |
| ユーザー |
shobonvip
|
| 提出日時 | 2024-03-23 04:27:59 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2,492 ms / 2,500 ms |
| コード長 | 3,185 bytes |
| コンパイル時間 | 18,647 ms |
| コンパイル使用メモリ | 327,528 KB |
| 最終ジャッジ日時 | 2025-02-20 13:02:27 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 38 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/
/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/
typedef long long ll;
#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)
template <typename T> bool chmin(T &a, const T &b) {
if (a <= b) return false;
a = b;
return true;
}
template <typename T> bool chmax(T &a, const T &b) {
if (a >= b) return false;
a = b;
return true;
}
template <typename T> T max(vector<T> &a){
assert(!a.empty());
T ret = a[0];
for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
return ret;
}
template <typename T> T min(vector<T> &a){
assert(!a.empty());
T ret = a[0];
for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
return ret;
}
template <typename T> T sum(vector<T> &a){
T ret = 0;
for (int i=0; i<(int)a.size(); i++) ret += a[i];
return ret;
}
struct UndoUnionFind{
int n;
vector<int> par;
vector<pair<int,int>> history;
explicit UndoUnionFind(int v): n(v), par(v,-1) {}
void merge(int a, int b){
int x = find(a);
int y = find(b);
history.push_back(pair(x, par[x]));
history.push_back(pair(y, par[y]));
if (x == y) return;
if (-par[x] < -par[y]) swap(x, y);
par[x] += par[y];
par[y] = x;
return;
}
int find(int x){
if (par[x] < 0) return x;
return find(par[x]);
}
void undo(){
par[history.back().first] = history.back().second;
history.pop_back();
par[history.back().first] = history.back().second;
history.pop_back();
return;
};
};
int main(){
int h, w; cin >> h >> w;
int n, d; cin >> n >> d;
vector<int> x(n), y(n);
rep(i,0,n) cin >> x[i] >> y[i];
map<pair<int,int>,int> taio;
rep(i,0,n){
taio[pair(x[i], y[i])] = i;
}
UndoUnionFind uf(n+1);
int val = 0;
rep(i,0,n){
rep(dx,-d,d+1){
rep(dy,-d,d+1){
if (abs(dx)+abs(dy)>d) continue;
if (taio.find(pair(x[i]+dx,y[i]+dy)) == taio.end()){
continue;
}
if (uf.find(taio[pair(x[i]+dx,y[i]+dy)]) != uf.find(i)){
if (-uf.par[uf.find(taio[pair(x[i]+dx,y[i]+dy)])] >= 2){
val--;
}
if (-uf.par[uf.find(i)] >= 2){
val--;
}
uf.merge(taio[pair(x[i]+dx,y[i]+dy)], i);
if(-uf.par[uf.find(i)]>=2){
val++;
}
}
}
}
}
int mn = 1e9;
int mx = -1;
rep(i,1,h+1){
rep(j,1,w+1){
if (taio.find(pair(i,j)) != taio.end()){
continue;
}
int cnt = 0;
int orval = val;
rep(dx,-d,d+1){
rep(dy,-d,d+1){
if (abs(dx)+abs(dy) > d) continue;
if (taio.find(pair(i+dx, j+dy)) == taio.end()){
continue;
}
if (uf.find(taio[pair(i+dx, j+dy)]) != uf.find(n)){
if (-uf.par[uf.find(taio[pair(i+dx, j+dy)])] >= 2){
val--;
}
if( -uf.par[uf.find(n)] >= 2){
val--;
}
uf.merge(taio[pair(i+dx, j+dy)], n);
if( -uf.par[uf.find(n)] >= 2){
val++;
}
cnt++;
}
}
}
chmax(mx,val);
chmin(mn,val);
rep(num,0,cnt){
uf.undo();
}
val = orval;
}
}
cout << mn << ' ' << mx << '\n';
}
shobonvip