oj.uz

답안 #801895

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
801895 2023-08-02T08:18:10 Z GEN 이지후(#10129) Cultivation (JOI17_cultivation) C++17
80 / 100
 1998 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(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;
	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 1 ms 384 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 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 0 ms 224 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 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 1 ms 384 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 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 0 ms 224 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 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 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 7 ms 372 KB Output is correct
22 Correct 8 ms 468 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 12 ms 564 KB Output is correct
26 Correct 72 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 29 ms 724 KB Output is correct
29 Correct 32 ms 984 KB Output is correct
30 Correct 35 ms 984 KB Output is correct
31 Correct 23 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 1 ms 384 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 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 0 ms 224 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 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 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 7 ms 372 KB Output is correct
22 Correct 8 ms 468 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 12 ms 564 KB Output is correct
26 Correct 72 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 29 ms 724 KB Output is correct
29 Correct 32 ms 984 KB Output is correct
30 Correct 35 ms 984 KB Output is correct
31 Correct 23 ms 984 KB Output is correct
32 Correct 32 ms 984 KB Output is correct
33 Correct 1140 ms 724 KB Output is correct
34 Correct 1523 ms 984 KB Output is correct
35 Correct 1236 ms 984 KB Output is correct
36 Correct 1482 ms 984 KB Output is correct
37 Correct 1475 ms 984 KB Output is correct
38 Correct 1481 ms 984 KB Output is correct
39 Correct 1350 ms 984 KB Output is correct
40 Correct 1361 ms 984 KB Output is correct
41 Correct 1540 ms 724 KB Output is correct
42 Correct 1342 ms 984 KB Output is correct
43 Correct 1450 ms 984 KB Output is correct
44 Correct 1192 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 2 ms 340 KB Output is correct
4 Correct 4 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 3 ms 340 KB Output is correct
10 Correct 4 ms 384 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 3 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 3 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 2 ms 340 KB Output is correct
4 Correct 4 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 3 ms 340 KB Output is correct
10 Correct 4 ms 384 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 3 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 3 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 19 ms 448 KB Output is correct
22 Correct 48 ms 340 KB Output is correct
23 Correct 117 ms 428 KB Output is correct
24 Correct 114 ms 432 KB Output is correct
25 Correct 51 ms 436 KB Output is correct
26 Correct 37 ms 340 KB Output is correct
27 Correct 149 ms 428 KB Output is correct
28 Correct 57 ms 340 KB Output is correct
29 Correct 43 ms 340 KB Output is correct
30 Correct 67 ms 428 KB Output is correct
31 Correct 58 ms 432 KB Output is correct
32 Correct 56 ms 436 KB Output is correct
33 Correct 129 ms 436 KB Output is correct
34 Correct 102 ms 460 KB Output is correct
35 Correct 98 ms 436 KB Output is correct
36 Correct 66 ms 428 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 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 0 ms 224 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 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 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 7 ms 372 KB Output is correct
22 Correct 8 ms 468 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 22 ms 724 KB Output is correct
25 Correct 12 ms 564 KB Output is correct
26 Correct 72 ms 984 KB Output is correct
27 Correct 71 ms 984 KB Output is correct
28 Correct 29 ms 724 KB Output is correct
29 Correct 32 ms 984 KB Output is correct
30 Correct 35 ms 984 KB Output is correct
31 Correct 23 ms 984 KB Output is correct
32 Correct 32 ms 984 KB Output is correct
33 Correct 1140 ms 724 KB Output is correct
34 Correct 1523 ms 984 KB Output is correct
35 Correct 1236 ms 984 KB Output is correct
36 Correct 1482 ms 984 KB Output is correct
37 Correct 1475 ms 984 KB Output is correct
38 Correct 1481 ms 984 KB Output is correct
39 Correct 1350 ms 984 KB Output is correct
40 Correct 1361 ms 984 KB Output is correct
41 Correct 1540 ms 724 KB Output is correct
42 Correct 1342 ms 984 KB Output is correct
43 Correct 1450 ms 984 KB Output is correct
44 Correct 1192 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 2 ms 340 KB Output is correct
48 Correct 4 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 3 ms 340 KB Output is correct
54 Correct 4 ms 384 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 3 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 3 ms 340 KB Output is correct
62 Correct 3 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 19 ms 448 KB Output is correct
66 Correct 48 ms 340 KB Output is correct
67 Correct 117 ms 428 KB Output is correct
68 Correct 114 ms 432 KB Output is correct
69 Correct 51 ms 436 KB Output is correct
70 Correct 37 ms 340 KB Output is correct
71 Correct 149 ms 428 KB Output is correct
72 Correct 57 ms 340 KB Output is correct
73 Correct 43 ms 340 KB Output is correct
74 Correct 67 ms 428 KB Output is correct
75 Correct 58 ms 432 KB Output is correct
76 Correct 56 ms 436 KB Output is correct
77 Correct 129 ms 436 KB Output is correct
78 Correct 102 ms 460 KB Output is correct
79 Correct 98 ms 436 KB Output is correct
80 Correct 66 ms 428 KB Output is correct
81 Correct 485 ms 724 KB Output is correct
82 Correct 482 ms 724 KB Output is correct
83 Correct 327 ms 728 KB Output is correct
84 Correct 1855 ms 728 KB Output is correct
85 Correct 870 ms 984 KB Output is correct
86 Correct 623 ms 984 KB Output is correct
87 Correct 893 ms 984 KB Output is correct
88 Correct 1998 ms 984 KB Output is correct
89 Correct 1758 ms 984 KB Output is correct
90 Correct 1966 ms 984 KB Output is correct
91 Correct 1032 ms 984 KB Output is correct
92 Correct 984 ms 984 KB Output is correct
93 Incorrect 1997 ms 984 KB Output isn't correct
94 Halted 0 ms 0 KB -