oj.uz

답안 #801898

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
801898 2023-08-02T08:18:48 Z GEN 이지후(#10129) Cultivation (JOI17_cultivation) C++17
100 / 100
 1997 ms 984 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(cmin, 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;
	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 = 2ll * (r + c);
	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());
	seg.init(sz(cy));
	for (auto &dy : gaps) {
		if (ans > dy) {
			ans = min(ans, sumFixed(r, c, dy, a) + dy);
			if (clock() > 0.9 * 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() > 1.995 * CLOCKS_PER_SEC)
			break;
	}
	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 0 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 0 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 360 KB Output is correct
15 Correct 0 ms 340 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 0 ms 340 KB Output is correct
2 Correct 0 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 0 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 360 KB Output is correct
15 Correct 0 ms 340 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 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 6 ms 340 KB Output is correct
22 Correct 9 ms 340 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 23 ms 724 KB Output is correct
25 Correct 12 ms 568 KB Output is correct
26 Correct 82 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 26 ms 724 KB Output is correct
29 Correct 35 ms 984 KB Output is correct
30 Correct 32 ms 984 KB Output is correct
31 Correct 22 ms 984 KB Output is correct
32 Correct 32 ms 984 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 0 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 0 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 360 KB Output is correct
15 Correct 0 ms 340 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 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 6 ms 340 KB Output is correct
22 Correct 9 ms 340 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 23 ms 724 KB Output is correct
25 Correct 12 ms 568 KB Output is correct
26 Correct 82 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 26 ms 724 KB Output is correct
29 Correct 35 ms 984 KB Output is correct
30 Correct 32 ms 984 KB Output is correct
31 Correct 22 ms 984 KB Output is correct
32 Correct 32 ms 984 KB Output is correct
33 Correct 1018 ms 724 KB Output is correct
34 Correct 1445 ms 984 KB Output is correct
35 Correct 1165 ms 984 KB Output is correct
36 Correct 1376 ms 984 KB Output is correct
37 Correct 1376 ms 984 KB Output is correct
38 Correct 1344 ms 984 KB Output is correct
39 Correct 1270 ms 984 KB Output is correct
40 Correct 1296 ms 984 KB Output is correct
41 Correct 1446 ms 736 KB Output is correct
42 Correct 1244 ms 984 KB Output is correct
43 Correct 1352 ms 984 KB Output is correct
44 Correct 1157 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 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 2 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 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 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 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 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 2 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 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 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 3 ms 340 KB Output is correct
21 Correct 21 ms 456 KB Output is correct
22 Correct 48 ms 340 KB Output is correct
23 Correct 110 ms 340 KB Output is correct
24 Correct 116 ms 432 KB Output is correct
25 Correct 48 ms 340 KB Output is correct
26 Correct 35 ms 432 KB Output is correct
27 Correct 139 ms 436 KB Output is correct
28 Correct 49 ms 436 KB Output is correct
29 Correct 40 ms 340 KB Output is correct
30 Correct 61 ms 432 KB Output is correct
31 Correct 46 ms 340 KB Output is correct
32 Correct 55 ms 340 KB Output is correct
33 Correct 121 ms 436 KB Output is correct
34 Correct 93 ms 428 KB Output is correct
35 Correct 94 ms 340 KB Output is correct
36 Correct 66 ms 340 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 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 0 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 360 KB Output is correct
15 Correct 0 ms 340 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 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 6 ms 340 KB Output is correct
22 Correct 9 ms 340 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 23 ms 724 KB Output is correct
25 Correct 12 ms 568 KB Output is correct
26 Correct 82 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 26 ms 724 KB Output is correct
29 Correct 35 ms 984 KB Output is correct
30 Correct 32 ms 984 KB Output is correct
31 Correct 22 ms 984 KB Output is correct
32 Correct 32 ms 984 KB Output is correct
33 Correct 1018 ms 724 KB Output is correct
34 Correct 1445 ms 984 KB Output is correct
35 Correct 1165 ms 984 KB Output is correct
36 Correct 1376 ms 984 KB Output is correct
37 Correct 1376 ms 984 KB Output is correct
38 Correct 1344 ms 984 KB Output is correct
39 Correct 1270 ms 984 KB Output is correct
40 Correct 1296 ms 984 KB Output is correct
41 Correct 1446 ms 736 KB Output is correct
42 Correct 1244 ms 984 KB Output is correct
43 Correct 1352 ms 984 KB Output is correct
44 Correct 1157 ms 984 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 2 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 3 ms 340 KB Output is correct
49 Correct 2 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 2 ms 340 KB Output is correct
52 Correct 2 ms 340 KB Output is correct
53 Correct 2 ms 340 KB Output is correct
54 Correct 4 ms 340 KB Output is correct
55 Correct 2 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 1 ms 340 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 2 ms 340 KB Output is correct
62 Correct 2 ms 340 KB Output is correct
63 Correct 2 ms 340 KB Output is correct
64 Correct 3 ms 340 KB Output is correct
65 Correct 21 ms 456 KB Output is correct
66 Correct 48 ms 340 KB Output is correct
67 Correct 110 ms 340 KB Output is correct
68 Correct 116 ms 432 KB Output is correct
69 Correct 48 ms 340 KB Output is correct
70 Correct 35 ms 432 KB Output is correct
71 Correct 139 ms 436 KB Output is correct
72 Correct 49 ms 436 KB Output is correct
73 Correct 40 ms 340 KB Output is correct
74 Correct 61 ms 432 KB Output is correct
75 Correct 46 ms 340 KB Output is correct
76 Correct 55 ms 340 KB Output is correct
77 Correct 121 ms 436 KB Output is correct
78 Correct 93 ms 428 KB Output is correct
79 Correct 94 ms 340 KB Output is correct
80 Correct 66 ms 340 KB Output is correct
81 Correct 424 ms 724 KB Output is correct
82 Correct 434 ms 724 KB Output is correct
83 Correct 298 ms 728 KB Output is correct
84 Correct 1786 ms 736 KB Output is correct
85 Correct 802 ms 984 KB Output is correct
86 Correct 620 ms 984 KB Output is correct
87 Correct 825 ms 984 KB Output is correct
88 Correct 1997 ms 984 KB Output is correct
89 Correct 1731 ms 984 KB Output is correct
90 Correct 1836 ms 984 KB Output is correct
91 Correct 1012 ms 984 KB Output is correct
92 Correct 980 ms 984 KB Output is correct
93 Correct 1933 ms 984 KB Output is correct
94 Correct 1996 ms 984 KB Output is correct
95 Correct 997 ms 984 KB Output is correct
96 Correct 1097 ms 984 KB Output is correct
97 Correct 1603 ms 984 KB Output is correct
98 Correct 1499 ms 984 KB Output is correct