Submission #912333

#	Time	Username	Problem	Language	Result	Execution time	Memory
912333		Nonoze	Garden (JOI23_garden)	C++17	75 / 100	3090 ms	26820 KiB

garden

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define sz(x) (int)(x.size())


int n, m, D;
vector<int> p, q;
vector<int> r, s;
vector<bool> xxx(10005, false), yyy(5005, false);

bool can(int i) {
	return (i>=0 && i<2*D+5);
}

void build(vector<int> &yy, set<int> qq) {
	for (auto u=qq.begin(); u!=qq.end(); u++) {
		auto v=++u;
		--u;
		if (v==qq.end()) {
			yy[D-(*u-*qq.begin()+1)]++;
		} else {
			yy[*v-*u-1]++;
		}
	}
}

int subtask5() {
	//vector<pair<int, int>> x;
	vector<vector<int>> x(2*D+5);
	set<int> y;
	for (int i=0; i<5005; i++) {
		int u=yyy[i];
		if (u) y.insert(i);
	}
	vector<int> yy(2*D+5, 0);
	build(yy, y);
	int emply=2*D+4;;
	while (emply>0 && yy[emply]<=0) emply--;
	int ans=D*D;
	for (int i=0; i<m; i++) x[r[i]].push_back(s[i]), x[r[i]+D].push_back(s[i]);
	for (auto &u: x) sort(u.begin(), u.end());
	for (int a=0; a<D; a++) {
		auto lsty=y;
		auto lstyy=yy;
		auto lstemply=emply;
		int szy=D-emply;
		int empl=a+D-1;
		for (;; empl--) {
			ans=min(ans, (empl-a+1)*szy);
			if (xxx[empl]) break;
			for (auto value: x[empl]) {
				auto tempy=y.lower_bound(value);
				if (tempy==y.end() || *tempy!=value) {
					if (tempy==y.end()) {
						auto prec=y.end(), next=y.begin();
						prec--;
						int act=D-(*prec-*next+1);
						if (can(act)) yy[act]--;
						if (can(D-(value-*next+1))) yy[D-(value-*next+1)]++;
						if (can(value-*prec-1)) yy[value-*prec-1]++;
					} else if (tempy==y.begin()) {
						auto prec=y.begin(), next=y.end();
						next--;
						int act=D-(*next-*prec+1);
						if (can(act)) yy[act]--;
						if (can(D-(*next-value+1))) yy[D-(*next-value+1)]++;
						if (can(value-*prec-1)) yy[value-*prec-1]++;
					} else {
						auto next=tempy, prec=--tempy;
						int act=*next-*prec-1;
						if (can(act)) yy[act]--;
						if (can(*next-value-1)) yy[*next-value-1]++;
						if (can(value-*prec-1)) yy[value-*prec-1]++;
					}
					y.insert(value);
				}
			}
			while (emply>0 && yy[emply]<=0) emply--;
			szy=D-emply;
		}
		y=lsty;
		yy=lstyy;
		emply=lstemply;
	}
	return ans;
}

int solve() {
	cin >> n >> m >> D;
	p.resize(n);
	q.resize(n);
	for (int i=0; i<n; i++) {
		cin >> p[i] >> q[i];
		xxx[p[i]]=true;
		yyy[q[i]]=true;
		xxx[p[i]+D]=true;
	}
	vector<pair<int, int>> temp;
	for (int i=0; i<m; i++) {
		int a, b; cin >> a >> b;
		if (xxx[a] || yyy[b]) continue;
		temp.push_back({a, b});
	}
	sort(temp.begin(), temp.end());
	m=sz(temp);
	r.clear(), s.clear();
	for (auto u: temp) r.push_back(u.first), s.push_back(u.second);
	return subtask5();
}


signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout << solve() << endl;
	return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 6 / 6
• Subtask 3: 8 / 8
• Subtask 4: 16 / 16
• Subtask 5: 30 / 30
• Subtask 6: 0 / 25