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답안 #801874

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
801874 2023-08-02T08:12:26 Z GEN 이지후(#10129) Cultivation (JOI17_cultivation) C++17
80 / 100
 1992 ms 1028 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 {
	int cmin, cmax, gap;
	node() {
		cmin = 2e9;
		cmax = -2e9;
		gap = 0;
	}
	node(int pos) {
		cmin = cmax = pos;
		gap = 0;
	}
	node(int fuck1, int fuck2, int 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[696];
pi dq[3][696];
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;
	memset(cnt, 0, sizeof(cnt));
	seg.init(sz(cy));

	for (int i = 0; i < sz(event);) {
		int j = i;
		while (j < sz(event) && event[i][0] == event[j][0]) {
			if (event[j][2]) {
				bool prv = (cnt[event[j][1]] > 0);
				cnt[event[j][1]] += event[j][2];
				bool cur = (cnt[event[j][1]] > 0);
				if (prv && !cur) {
					seg.upd(event[j][1], cnt[event[j][1]]);
				} else if (!prv && cur) {
					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;
	memset(fr, 0, sizeof(fr));
	memset(ed, 0, sizeof(ed));
	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, lint jasal) {
	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;
	memset(cnt, 0, sizeof(cnt));
	seg.init(sz(cy));
	for (int i = 0; i < sz(event);) {
		int j = i;
		while (j < sz(event) && event[i][0] == event[j][0]) {
			if (event[j][2]) {
				bool prv = (cnt[event[j][1]] > 0);
				cnt[event[j][1]] += event[j][2];
				bool cur = (cnt[event[j][1]] > 0);
				if (prv && !cur) {
					seg.upd(event[j][1], cnt[event[j][1]]);
				} else if (!prv && cur) {
					seg.upd(event[j][1], cnt[event[j][1]]);
				}
			}
			j++;
		}
		if (j == sz(event))
			break;
		lmax = max(lmax, 1ll * seg.tree[1].cmin);
		rmax = max(rmax, c - 1 - seg.tree[1].cmax);
		lrmax = max(lrmax, 1ll * seg.tree[1].gap);
		if (lmax + rmax >= jasal || lrmax >= jasal)
			return 1e18;
		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();
	}
	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);
			if (clock() > 1.0 * CLOCKS_PER_SEC)
				break;
		}
	}
	for (int i = 0; i < n; i++) {
		for (int j = n - 1; j >= 0; j--) {
			if (a[i][0] + r - 1 - a[j][0] >= ans)
				break;
			lint jsp = ans - (a[i][0] + r - 1 - a[j][0]);
			ans = min(ans, a[i][0] + r - 1 - a[j][0] + solve(r, c, a[i][0], r - 1 - a[j][0], a, jsp));
		}
		if (clock() > 1.99 * CLOCKS_PER_SEC)
			break;
	}
	cout << ans << endl;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 9 ms 476 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 15 ms 468 KB Output is correct
26 Correct 86 ms 984 KB Output is correct
27 Correct 73 ms 984 KB Output is correct
28 Correct 32 ms 720 KB Output is correct
29 Correct 34 ms 984 KB Output is correct
30 Correct 36 ms 984 KB Output is correct
31 Correct 23 ms 984 KB Output is correct
32 Correct 34 ms 984 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 9 ms 476 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 15 ms 468 KB Output is correct
26 Correct 86 ms 984 KB Output is correct
27 Correct 73 ms 984 KB Output is correct
28 Correct 32 ms 720 KB Output is correct
29 Correct 34 ms 984 KB Output is correct
30 Correct 36 ms 984 KB Output is correct
31 Correct 23 ms 984 KB Output is correct
32 Correct 34 ms 984 KB Output is correct
33 Correct 1124 ms 724 KB Output is correct
34 Correct 1631 ms 984 KB Output is correct
35 Correct 1257 ms 1028 KB Output is correct
36 Correct 1618 ms 980 KB Output is correct
37 Correct 1557 ms 984 KB Output is correct
38 Correct 1546 ms 984 KB Output is correct
39 Correct 1497 ms 984 KB Output is correct
40 Correct 1382 ms 984 KB Output is correct
41 Correct 1605 ms 724 KB Output is correct
42 Correct 1353 ms 984 KB Output is correct
43 Correct 1463 ms 984 KB Output is correct
44 Correct 1220 ms 984 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 360 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 368 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 3 ms 356 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 3 ms 360 KB Output is correct
11 Correct 3 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 3 ms 356 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 356 KB Output is correct
20 Correct 3 ms 340 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 360 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 368 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 3 ms 356 KB Output is correct
9 Correct 4 ms 340 KB Output is correct
10 Correct 3 ms 360 KB Output is correct
11 Correct 3 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 3 ms 356 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 356 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 22 ms 504 KB Output is correct
22 Correct 58 ms 440 KB Output is correct
23 Correct 122 ms 432 KB Output is correct
24 Correct 118 ms 432 KB Output is correct
25 Correct 55 ms 432 KB Output is correct
26 Correct 39 ms 340 KB Output is correct
27 Correct 158 ms 428 KB Output is correct
28 Correct 56 ms 340 KB Output is correct
29 Correct 46 ms 432 KB Output is correct
30 Correct 72 ms 340 KB Output is correct
31 Correct 62 ms 432 KB Output is correct
32 Correct 62 ms 432 KB Output is correct
33 Correct 144 ms 432 KB Output is correct
34 Correct 102 ms 432 KB Output is correct
35 Correct 119 ms 432 KB Output is correct
36 Correct 72 ms 340 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 9 ms 476 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 15 ms 468 KB Output is correct
26 Correct 86 ms 984 KB Output is correct
27 Correct 73 ms 984 KB Output is correct
28 Correct 32 ms 720 KB Output is correct
29 Correct 34 ms 984 KB Output is correct
30 Correct 36 ms 984 KB Output is correct
31 Correct 23 ms 984 KB Output is correct
32 Correct 34 ms 984 KB Output is correct
33 Correct 1124 ms 724 KB Output is correct
34 Correct 1631 ms 984 KB Output is correct
35 Correct 1257 ms 1028 KB Output is correct
36 Correct 1618 ms 980 KB Output is correct
37 Correct 1557 ms 984 KB Output is correct
38 Correct 1546 ms 984 KB Output is correct
39 Correct 1497 ms 984 KB Output is correct
40 Correct 1382 ms 984 KB Output is correct
41 Correct 1605 ms 724 KB Output is correct
42 Correct 1353 ms 984 KB Output is correct
43 Correct 1463 ms 984 KB Output is correct
44 Correct 1220 ms 984 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 2 ms 360 KB Output is correct
47 Correct 2 ms 340 KB Output is correct
48 Correct 4 ms 340 KB Output is correct
49 Correct 3 ms 368 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 2 ms 340 KB Output is correct
52 Correct 3 ms 356 KB Output is correct
53 Correct 4 ms 340 KB Output is correct
54 Correct 3 ms 360 KB Output is correct
55 Correct 3 ms 340 KB Output is correct
56 Correct 2 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 2 ms 340 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 3 ms 356 KB Output is correct
61 Correct 2 ms 340 KB Output is correct
62 Correct 2 ms 340 KB Output is correct
63 Correct 3 ms 356 KB Output is correct
64 Correct 3 ms 340 KB Output is correct
65 Correct 22 ms 504 KB Output is correct
66 Correct 58 ms 440 KB Output is correct
67 Correct 122 ms 432 KB Output is correct
68 Correct 118 ms 432 KB Output is correct
69 Correct 55 ms 432 KB Output is correct
70 Correct 39 ms 340 KB Output is correct
71 Correct 158 ms 428 KB Output is correct
72 Correct 56 ms 340 KB Output is correct
73 Correct 46 ms 432 KB Output is correct
74 Correct 72 ms 340 KB Output is correct
75 Correct 62 ms 432 KB Output is correct
76 Correct 62 ms 432 KB Output is correct
77 Correct 144 ms 432 KB Output is correct
78 Correct 102 ms 432 KB Output is correct
79 Correct 119 ms 432 KB Output is correct
80 Correct 72 ms 340 KB Output is correct
81 Correct 471 ms 724 KB Output is correct
82 Correct 471 ms 724 KB Output is correct
83 Correct 341 ms 728 KB Output is correct
84 Correct 1935 ms 728 KB Output is correct
85 Correct 876 ms 984 KB Output is correct
86 Correct 649 ms 984 KB Output is correct
87 Correct 894 ms 984 KB Output is correct
88 Incorrect 1992 ms 984 KB Output isn't correct
89 Halted 0 ms 0 KB -