oj.uz

답안 #801757

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
801757 2023-08-02T07:29:55 Z GEN 이지후(#10129) Cultivation (JOI17_cultivation) C++17
30 / 100
 71 ms 992 KB 
#include <bits/stdc++.h>
using namespace std;
using lint = long long;
using pi = array<lint, 2>;
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
const int MAXT = 1050;

vector<lint> cy;

struct node {
	lint cmin, cmax, gap;
	node() {
		cmin = 1e18;
		cmax = -1e18;
		gap = 0;
	}
	node(lint pos) {
		cmin = cmax = pos;
		gap = 0;
	}
	node(lint fuck1, lint fuck2, lint fuck3) {
		cmin = fuck1;
		cmax = fuck2;
		gap = fuck3;
	}
	node operator+(const node &nd) {
		if (cmax < 0)
			return nd;
		if (nd.cmax < 0)
			return *this;
		return node(min(cmin, nd.cmin), max(cmax, nd.cmax), max({gap, nd.gap, nd.cmin - cmax - 1}));
	}
};

struct seg {
	node tree[MAXT];
	int lim;
	void init(int sz) {
		for (lim = 1; lim <= sz; lim <<= 1)
			;
		fill(tree, tree + MAXT, node());
	}
	void upd(int x, int cnt) {
		if (cnt == 0)
			tree[x + lim] = node();
		else
			tree[x + lim] = node(cy[x]);
		x += lim;
		while (x > 1) {
			x >>= 1;
			tree[x] = tree[2 * x] + tree[2 * x + 1];
		}
	}
} seg;

int cnt[1557];
pi dq[3][1557];
int fr[3], ed[3];

lint sumFixed(lint r, lint c, lint g, vector<pi> a) {
	vector<array<lint, 3>> e1, e2, event;
	e1.push_back({0, -1, 0});
	for (auto &[x, y] : a) {
		e1.push_back({x, y, +1});
		e2.push_back({x + 1 + g, y, -1});
	}
	e2.push_back({r + g, -1, 0});
	event.resize(sz(e1) + sz(e2));
	merge(all(e1), all(e2), event.begin());
	vector<array<lint, 5>> chop;
	for (int i = 0; i < sz(event);) {
		int j = i;
		while (j < sz(event) && event[i][0] == event[j][0]) {
			if (event[j][2]) {
				cnt[event[j][1]] += event[j][2];
				seg.upd(event[j][1], cnt[event[j][1]]);
			}
			j++;
		}
		if (j == sz(event))
			break;
		lint lmax = seg.tree[1].cmin, rmax = c - 1 - seg.tree[1].cmax, lrmax = seg.tree[1].gap;
		chop.push_back({event[i][0], event[j][0], lmax, rmax, lrmax});
		i = j;
	}
	int k = 0;
	priority_queue<pi> pq1, pq2, pq3;
	lint ans = 1e18;
	for (int i = 0; i < sz(chop); i++) {
		if (chop[i][0] > g)
			break;
		while (k < sz(chop) && chop[k][0] < chop[i][0] + r) {
			for (int t = 0; t < 3; t++) {
				pi val = {chop[k][t + 2], chop[k][1]};
				while (fr[t] < ed[t] && dq[t][ed[t] - 1][0] <= val[0])
					ed[t]--;
				dq[t][ed[t]++] = val;
			}
			k++;
		}
		lint dap[3] = {0, 0, 0};
		for (int t = 0; t < 3; t++) {
			while (fr[t] < ed[t] && dq[t][fr[t]][1] <= chop[i][0])
				fr[t]++;
			dap[t] = dq[t][fr[t]][0];
		}
		ans = min(ans, max(dap[0] + dap[1], dap[2]));
	}
	return ans;
}

map<pi, lint> mp;
// abandon
lint solve(lint r, lint c, lint dl, lint dr, vector<pi> a) {
	if (mp.count({dl, dr}))
		return mp[pi{dl, dr}];
	vector<array<lint, 3>> e1, e2, event;
	for (auto &[x, y] : a) {
		int l = max(0ll, x - dl);
		int e = min(r * 1ll, x + 1 + dr);
		e1.push_back({l, y, +1});
		e2.push_back({e, y, -1});
	}
	event.resize(sz(e1) + sz(e2));
	merge(all(e1), all(e2), event.begin());
	if (event[0][0] != 0 || event.back()[0] != r)
		return mp[pi{dl, dr}] = 1e18;

	lint lmax = 0, rmax = 0, lrmax = 0;
	multiset<lint> s;
	for (int i = 0; i < sz(event);) {
		int j = i;
		while (j < sz(event) && event[i][0] == event[j][0]) {
			if (event[j][2]) {
				cnt[event[j][1]] += event[j][2];
				seg.upd(event[j][1], cnt[event[j][1]]);
			}
			j++;
		}
		if (j == sz(event))
			break;
		lmax = max(lmax, seg.tree[1].cmin);
		rmax = max(rmax, c - 1 - seg.tree[1].cmax);
		lrmax = max(lrmax, seg.tree[1].gap);
		i = j;
	}
	return mp[pi{dl, dr}] = max(lmax + rmax, lrmax);
}

// n^3 log n

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n, r, c;
	cin >> r >> c >> n;
	vector<pi> a(n);
	for (auto &[x, y] : a)
		cin >> x >> y, x--, y--;
	sort(all(a));
	lint ans = 1e18;
	vector<lint> gaps = {0};
	for (int i = 0; i < n; i++) {
		cy.push_back(a[i][1]);
		for (int j = i + 1; j < n; j++) {
			if (a[j][0] > a[i][0])
				gaps.push_back(a[j][0] - a[i][0] - 1);
		}
	}
	sort(all(cy));
	cy.resize(unique(all(cy)) - cy.begin());
	for (int i = 0; i < n; i++) {
		a[i][1] = lower_bound(all(cy), a[i][1]) - cy.begin();
	}
	seg.init(sz(cy));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			ans = min(ans, a[i][0] + r - 1 - a[j][0] + solve(r, c, a[i][0], r - 1 - a[j][0], a));
		}
	}
	sort(all(gaps));
	gaps.resize(unique(all(gaps)) - gaps.begin());
	for (auto &dy : gaps) {
		if (ans > dy)
			ans = min(ans, sumFixed(r, c, dy, a) + dy);
	}
	cout << ans << endl;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 4 ms 340 KB Output is correct
19 Correct 1 ms 376 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 5 ms 340 KB Output is correct
22 Correct 18 ms 472 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 31 ms 724 KB Output is correct
25 Correct 23 ms 468 KB Output is correct
26 Correct 56 ms 984 KB Output is correct
27 Correct 53 ms 984 KB Output is correct
28 Correct 30 ms 724 KB Output is correct
29 Correct 49 ms 988 KB Output is correct
30 Correct 55 ms 984 KB Output is correct
31 Correct 53 ms 984 KB Output is correct
32 Correct 53 ms 992 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 4 ms 340 KB Output is correct
19 Correct 1 ms 376 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 5 ms 340 KB Output is correct
22 Correct 18 ms 472 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 31 ms 724 KB Output is correct
25 Correct 23 ms 468 KB Output is correct
26 Correct 56 ms 984 KB Output is correct
27 Correct 53 ms 984 KB Output is correct
28 Correct 30 ms 724 KB Output is correct
29 Correct 49 ms 988 KB Output is correct
30 Correct 55 ms 984 KB Output is correct
31 Correct 53 ms 984 KB Output is correct
32 Correct 53 ms 992 KB Output is correct
33 Correct 12 ms 852 KB Output is correct
34 Correct 66 ms 984 KB Output is correct
35 Correct 63 ms 984 KB Output is correct
36 Correct 70 ms 984 KB Output is correct
37 Correct 53 ms 984 KB Output is correct
38 Correct 70 ms 984 KB Output is correct
39 Correct 65 ms 984 KB Output is correct
40 Correct 66 ms 984 KB Output is correct
41 Correct 32 ms 732 KB Output is correct
42 Correct 54 ms 984 KB Output is correct
43 Correct 71 ms 984 KB Output is correct
44 Correct 71 ms 992 KB Output is correct

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 3 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 3 ms 352 KB Output is correct
6 Incorrect 2 ms 344 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 3 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 3 ms 352 KB Output is correct
6 Incorrect 2 ms 344 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 4 ms 340 KB Output is correct
19 Correct 1 ms 376 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 5 ms 340 KB Output is correct
22 Correct 18 ms 472 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 31 ms 724 KB Output is correct
25 Correct 23 ms 468 KB Output is correct
26 Correct 56 ms 984 KB Output is correct
27 Correct 53 ms 984 KB Output is correct
28 Correct 30 ms 724 KB Output is correct
29 Correct 49 ms 988 KB Output is correct
30 Correct 55 ms 984 KB Output is correct
31 Correct 53 ms 984 KB Output is correct
32 Correct 53 ms 992 KB Output is correct
33 Correct 12 ms 852 KB Output is correct
34 Correct 66 ms 984 KB Output is correct
35 Correct 63 ms 984 KB Output is correct
36 Correct 70 ms 984 KB Output is correct
37 Correct 53 ms 984 KB Output is correct
38 Correct 70 ms 984 KB Output is correct
39 Correct 65 ms 984 KB Output is correct
40 Correct 66 ms 984 KB Output is correct
41 Correct 32 ms 732 KB Output is correct
42 Correct 54 ms 984 KB Output is correct
43 Correct 71 ms 984 KB Output is correct
44 Correct 71 ms 992 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 3 ms 340 KB Output is correct
47 Correct 3 ms 340 KB Output is correct
48 Correct 3 ms 340 KB Output is correct
49 Correct 3 ms 352 KB Output is correct
50 Incorrect 2 ms 344 KB Output isn't correct
51 Halted 0 ms 0 KB -