답안 #32623 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
32623	2017-10-12T18:16:34 Z	aome	Bulldozer (JOI17_bulldozer)	C++14	100 / 100	996 ms	32352 KB

bulldozer

#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
 
const int N = 2005;
const int INF = 1e9;
 
struct Point {
	int x, y, w;
} a[N];
 
struct Node {
	long long s, sl, sr, mx;
 
	Node () { s = sl = sr = 0, mx = -INF; }
};

typedef pair<int, int> ii;
 
int n, pos[N];
long long res;
Node it[4 * N];
vector<ii> go;
 
Node Merge(Node x, Node y) {
	Node z;
	z.s = x.s + y.s;
	z.sl = max(x.sl, x.s + y.sl);
	z.sr = max(x.sr + y.s, y.sr);
	z.mx = max(max(x.mx, y.mx), x.sr + y.sl);
	return z;
}
 
void build(int i, int l, int r) {
	if (l == r) {
		it[i].s = it[i].sl = it[i].sr = it[i].mx = a[l].w; return;
	}
	int mid = (l + r) >> 1;
	build(i << 1, l, mid), build(i << 1 | 1, mid + 1, r);
	it[i] = Merge(it[i << 1], it[i << 1 | 1]);
}
 
void upd(int i, int l, int r, int p, int v) {
	if (l == r) {
		it[i].s = it[i].sl = it[i].sr = it[i].mx = v; return;
	}
	int mid = (l + r) >> 1;
	if (p <= mid) upd(i << 1, l, mid, p, v);
	else upd(i << 1 | 1, mid + 1, r, p, v);
	it[i] = Merge(it[i << 1], it[i << 1 | 1]);
}

long long cal(ii x, ii y) {
	return 1LL * (a[x.fi].y - a[x.se].y) * (a[y.fi].x - a[y.se].x) - 1LL * (a[y.fi].y - a[y.se].y) * (a[x.fi].x - a[x.se].x);
}
 
int main() {
	ios::sync_with_stdio(false);
	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> a[i].x >> a[i].y >> a[i].w;
	}
	sort(a, a + n, [&](Point x, Point y) {
		return make_pair(x.y, x.x) < make_pair(y.y, y.x);
	});
	// for (int i = 0; i < n; ++i) {
	// 	cout << a[i].x << ' ' << a[i].y << ' ' << a[i].w << '\n';
	// }
	for (int i = 0; i < n; ++i) pos[i] = i;
	build(1, 0, n - 1);
	res = max(res, it[1].mx);
	for (int  i = 0; i < n; ++i) {
		for (int j = i + 1; j < n; ++j) {
			go.push_back(ii(i, j));
		}
	}
	sort(go.begin(), go.end(), [&](ii x, ii y) {
		long long tmp = cal(x, y);
		return tmp == 0 ? x < y : tmp < 0;
	});
	// for (auto i : go) cout << i.fi << ' ' << i.se << '\n';
	for (int i = 0; i < go.size(); ++i) {
		vector<ii> _go;
		_go.push_back(go[i]);
		while (i + 1 < go.size() && !cal(go[i], go[i + 1])) {
			i++, _go.push_back(go[i]);
		}
		for (auto j : _go) {
			// cout << j.x << ' ' << j.y << '\n';
			swap(pos[j.fi], pos[j.se]);
			upd(1, 0, n - 1, pos[j.fi], a[j.fi].w);
			upd(1, 0, n - 1, pos[j.se], a[j.se].w);
		}
		// for (int j = 0; j < n; ++j) cout << pos[j] << ' '; cout << '\n';
		res = max(res, it[1].mx);
	}
	cout << res << '\n';
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:83:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < go.size(); ++i) {
                  ~~^~~~~~~~~~~
bulldozer.cpp:86:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (i + 1 < go.size() && !cal(go[i], go[i + 1])) {
          ~~~~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	768 KB	Output is correct
2	Correct	3 ms	768 KB	Output is correct
3	Correct	3 ms	768 KB	Output is correct
4	Correct	3 ms	768 KB	Output is correct
5	Correct	2 ms	768 KB	Output is correct
6	Correct	3 ms	768 KB	Output is correct
7	Correct	3 ms	768 KB	Output is correct
8	Correct	3 ms	768 KB	Output is correct
9	Correct	3 ms	784 KB	Output is correct
10	Correct	3 ms	768 KB	Output is correct
11	Correct	2 ms	640 KB	Output is correct
12	Correct	2 ms	640 KB	Output is correct
13	Correct	2 ms	640 KB	Output is correct
14	Correct	2 ms	640 KB	Output is correct
15	Correct	2 ms	640 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	640 KB	Output is correct
2	Correct	4 ms	640 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	640 KB	Output is correct
6	Correct	3 ms	640 KB	Output is correct
7	Correct	3 ms	636 KB	Output is correct
8	Correct	3 ms	640 KB	Output is correct
9	Correct	3 ms	640 KB	Output is correct
10	Correct	3 ms	640 KB	Output is correct
11	Correct	2 ms	640 KB	Output is correct
12	Correct	2 ms	640 KB	Output is correct
13	Correct	3 ms	640 KB	Output is correct
14	Correct	2 ms	640 KB	Output is correct
15	Correct	2 ms	556 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	2 ms	640 KB	Output is correct
18	Correct	2 ms	640 KB	Output is correct
19	Correct	2 ms	512 KB	Output is correct
20	Correct	2 ms	640 KB	Output is correct
21	Correct	4 ms	768 KB	Output is correct
22	Correct	4 ms	640 KB	Output is correct
23	Correct	4 ms	640 KB	Output is correct
24	Correct	4 ms	640 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	3 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	4 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	4 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	4 ms	640 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	640 KB	Output is correct
2	Correct	4 ms	640 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	640 KB	Output is correct
6	Correct	3 ms	640 KB	Output is correct
7	Correct	3 ms	636 KB	Output is correct
8	Correct	3 ms	640 KB	Output is correct
9	Correct	3 ms	640 KB	Output is correct
10	Correct	3 ms	640 KB	Output is correct
11	Correct	2 ms	640 KB	Output is correct
12	Correct	2 ms	640 KB	Output is correct
13	Correct	3 ms	640 KB	Output is correct
14	Correct	2 ms	640 KB	Output is correct
15	Correct	2 ms	556 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	2 ms	640 KB	Output is correct
18	Correct	2 ms	640 KB	Output is correct
19	Correct	2 ms	512 KB	Output is correct
20	Correct	2 ms	640 KB	Output is correct
21	Correct	4 ms	768 KB	Output is correct
22	Correct	4 ms	640 KB	Output is correct
23	Correct	4 ms	640 KB	Output is correct
24	Correct	4 ms	640 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	3 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	4 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	4 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	4 ms	640 KB	Output is correct
33	Correct	870 ms	17132 KB	Output is correct
34	Correct	862 ms	17132 KB	Output is correct
35	Correct	892 ms	17124 KB	Output is correct
36	Correct	852 ms	17120 KB	Output is correct
37	Correct	863 ms	17132 KB	Output is correct
38	Correct	896 ms	17132 KB	Output is correct
39	Correct	885 ms	17120 KB	Output is correct
40	Correct	918 ms	17132 KB	Output is correct
41	Correct	848 ms	17216 KB	Output is correct
42	Correct	856 ms	17252 KB	Output is correct
43	Correct	856 ms	17224 KB	Output is correct
44	Correct	840 ms	17132 KB	Output is correct
45	Correct	848 ms	17148 KB	Output is correct
46	Correct	834 ms	17252 KB	Output is correct
47	Correct	865 ms	17132 KB	Output is correct
48	Correct	925 ms	17132 KB	Output is correct
49	Correct	876 ms	17132 KB	Output is correct
50	Correct	938 ms	17132 KB	Output is correct
51	Correct	887 ms	17124 KB	Output is correct
52	Correct	880 ms	17200 KB	Output is correct
53	Correct	870 ms	17260 KB	Output is correct
54	Correct	850 ms	17120 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	640 KB	Output is correct
2	Correct	4 ms	640 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	640 KB	Output is correct
6	Correct	3 ms	640 KB	Output is correct
7	Correct	3 ms	636 KB	Output is correct
8	Correct	3 ms	640 KB	Output is correct
9	Correct	3 ms	640 KB	Output is correct
10	Correct	3 ms	640 KB	Output is correct
11	Correct	2 ms	640 KB	Output is correct
12	Correct	2 ms	640 KB	Output is correct
13	Correct	3 ms	640 KB	Output is correct
14	Correct	2 ms	640 KB	Output is correct
15	Correct	2 ms	556 KB	Output is correct
16	Correct	2 ms	560 KB	Output is correct
17	Correct	2 ms	640 KB	Output is correct
18	Correct	2 ms	640 KB	Output is correct
19	Correct	2 ms	512 KB	Output is correct
20	Correct	2 ms	640 KB	Output is correct
21	Correct	4 ms	768 KB	Output is correct
22	Correct	4 ms	640 KB	Output is correct
23	Correct	4 ms	640 KB	Output is correct
24	Correct	4 ms	640 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	3 ms	640 KB	Output is correct
27	Correct	4 ms	640 KB	Output is correct
28	Correct	4 ms	640 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	4 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	4 ms	640 KB	Output is correct
33	Correct	870 ms	17132 KB	Output is correct
34	Correct	862 ms	17132 KB	Output is correct
35	Correct	892 ms	17124 KB	Output is correct
36	Correct	852 ms	17120 KB	Output is correct
37	Correct	863 ms	17132 KB	Output is correct
38	Correct	896 ms	17132 KB	Output is correct
39	Correct	885 ms	17120 KB	Output is correct
40	Correct	918 ms	17132 KB	Output is correct
41	Correct	848 ms	17216 KB	Output is correct
42	Correct	856 ms	17252 KB	Output is correct
43	Correct	856 ms	17224 KB	Output is correct
44	Correct	840 ms	17132 KB	Output is correct
45	Correct	848 ms	17148 KB	Output is correct
46	Correct	834 ms	17252 KB	Output is correct
47	Correct	865 ms	17132 KB	Output is correct
48	Correct	925 ms	17132 KB	Output is correct
49	Correct	876 ms	17132 KB	Output is correct
50	Correct	938 ms	17132 KB	Output is correct
51	Correct	887 ms	17124 KB	Output is correct
52	Correct	880 ms	17200 KB	Output is correct
53	Correct	870 ms	17260 KB	Output is correct
54	Correct	850 ms	17120 KB	Output is correct
55	Correct	851 ms	17124 KB	Output is correct
56	Correct	845 ms	17132 KB	Output is correct
57	Correct	863 ms	17252 KB	Output is correct
58	Correct	870 ms	17316 KB	Output is correct
59	Correct	869 ms	17132 KB	Output is correct
60	Correct	885 ms	17132 KB	Output is correct
61	Correct	880 ms	17220 KB	Output is correct
62	Correct	850 ms	17132 KB	Output is correct
63	Correct	889 ms	17124 KB	Output is correct
64	Correct	912 ms	17120 KB	Output is correct
65	Correct	885 ms	17124 KB	Output is correct
66	Correct	869 ms	17132 KB	Output is correct
67	Correct	861 ms	17116 KB	Output is correct
68	Correct	893 ms	17120 KB	Output is correct
69	Correct	896 ms	17128 KB	Output is correct
70	Correct	865 ms	17216 KB	Output is correct
71	Correct	849 ms	17124 KB	Output is correct
72	Correct	850 ms	17132 KB	Output is correct
73	Correct	870 ms	17132 KB	Output is correct
74	Correct	869 ms	17220 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	768 KB	Output is correct
2	Correct	3 ms	768 KB	Output is correct
3	Correct	3 ms	768 KB	Output is correct
4	Correct	3 ms	768 KB	Output is correct
5	Correct	2 ms	768 KB	Output is correct
6	Correct	3 ms	768 KB	Output is correct
7	Correct	3 ms	768 KB	Output is correct
8	Correct	3 ms	768 KB	Output is correct
9	Correct	3 ms	784 KB	Output is correct
10	Correct	3 ms	768 KB	Output is correct
11	Correct	2 ms	640 KB	Output is correct
12	Correct	2 ms	640 KB	Output is correct
13	Correct	2 ms	640 KB	Output is correct
14	Correct	2 ms	640 KB	Output is correct
15	Correct	2 ms	640 KB	Output is correct
16	Correct	3 ms	640 KB	Output is correct
17	Correct	4 ms	640 KB	Output is correct
18	Correct	3 ms	640 KB	Output is correct
19	Correct	4 ms	640 KB	Output is correct
20	Correct	3 ms	640 KB	Output is correct
21	Correct	3 ms	640 KB	Output is correct
22	Correct	3 ms	636 KB	Output is correct
23	Correct	3 ms	640 KB	Output is correct
24	Correct	3 ms	640 KB	Output is correct
25	Correct	3 ms	640 KB	Output is correct
26	Correct	2 ms	640 KB	Output is correct
27	Correct	2 ms	640 KB	Output is correct
28	Correct	3 ms	640 KB	Output is correct
29	Correct	2 ms	640 KB	Output is correct
30	Correct	2 ms	556 KB	Output is correct
31	Correct	2 ms	560 KB	Output is correct
32	Correct	2 ms	640 KB	Output is correct
33	Correct	2 ms	640 KB	Output is correct
34	Correct	2 ms	512 KB	Output is correct
35	Correct	2 ms	640 KB	Output is correct
36	Correct	4 ms	768 KB	Output is correct
37	Correct	4 ms	640 KB	Output is correct
38	Correct	4 ms	640 KB	Output is correct
39	Correct	4 ms	640 KB	Output is correct
40	Correct	4 ms	768 KB	Output is correct
41	Correct	3 ms	640 KB	Output is correct
42	Correct	4 ms	640 KB	Output is correct
43	Correct	4 ms	640 KB	Output is correct
44	Correct	4 ms	640 KB	Output is correct
45	Correct	4 ms	640 KB	Output is correct
46	Correct	3 ms	640 KB	Output is correct
47	Correct	4 ms	640 KB	Output is correct
48	Correct	870 ms	17132 KB	Output is correct
49	Correct	862 ms	17132 KB	Output is correct
50	Correct	892 ms	17124 KB	Output is correct
51	Correct	852 ms	17120 KB	Output is correct
52	Correct	863 ms	17132 KB	Output is correct
53	Correct	896 ms	17132 KB	Output is correct
54	Correct	885 ms	17120 KB	Output is correct
55	Correct	918 ms	17132 KB	Output is correct
56	Correct	848 ms	17216 KB	Output is correct
57	Correct	856 ms	17252 KB	Output is correct
58	Correct	856 ms	17224 KB	Output is correct
59	Correct	840 ms	17132 KB	Output is correct
60	Correct	848 ms	17148 KB	Output is correct
61	Correct	834 ms	17252 KB	Output is correct
62	Correct	865 ms	17132 KB	Output is correct
63	Correct	925 ms	17132 KB	Output is correct
64	Correct	876 ms	17132 KB	Output is correct
65	Correct	938 ms	17132 KB	Output is correct
66	Correct	887 ms	17124 KB	Output is correct
67	Correct	880 ms	17200 KB	Output is correct
68	Correct	870 ms	17260 KB	Output is correct
69	Correct	850 ms	17120 KB	Output is correct
70	Correct	851 ms	17124 KB	Output is correct
71	Correct	845 ms	17132 KB	Output is correct
72	Correct	863 ms	17252 KB	Output is correct
73	Correct	870 ms	17316 KB	Output is correct
74	Correct	869 ms	17132 KB	Output is correct
75	Correct	885 ms	17132 KB	Output is correct
76	Correct	880 ms	17220 KB	Output is correct
77	Correct	850 ms	17132 KB	Output is correct
78	Correct	889 ms	17124 KB	Output is correct
79	Correct	912 ms	17120 KB	Output is correct
80	Correct	885 ms	17124 KB	Output is correct
81	Correct	869 ms	17132 KB	Output is correct
82	Correct	861 ms	17116 KB	Output is correct
83	Correct	893 ms	17120 KB	Output is correct
84	Correct	896 ms	17128 KB	Output is correct
85	Correct	865 ms	17216 KB	Output is correct
86	Correct	849 ms	17124 KB	Output is correct
87	Correct	850 ms	17132 KB	Output is correct
88	Correct	870 ms	17132 KB	Output is correct
89	Correct	869 ms	17220 KB	Output is correct
90	Correct	926 ms	17136 KB	Output is correct
91	Correct	864 ms	17240 KB	Output is correct
92	Correct	850 ms	17224 KB	Output is correct
93	Correct	853 ms	17132 KB	Output is correct
94	Correct	873 ms	17192 KB	Output is correct
95	Correct	885 ms	17232 KB	Output is correct
96	Correct	884 ms	17312 KB	Output is correct
97	Correct	880 ms	17120 KB	Output is correct
98	Correct	860 ms	17132 KB	Output is correct
99	Correct	855 ms	17120 KB	Output is correct
100	Correct	762 ms	32332 KB	Output is correct
101	Correct	737 ms	32328 KB	Output is correct
102	Correct	763 ms	32324 KB	Output is correct
103	Correct	717 ms	32320 KB	Output is correct
104	Correct	723 ms	32352 KB	Output is correct
105	Correct	778 ms	29668 KB	Output is correct
106	Correct	777 ms	29760 KB	Output is correct
107	Correct	766 ms	29632 KB	Output is correct
108	Correct	810 ms	29752 KB	Output is correct
109	Correct	783 ms	29756 KB	Output is correct
110	Correct	736 ms	17124 KB	Output is correct
111	Correct	735 ms	17132 KB	Output is correct
112	Correct	746 ms	17124 KB	Output is correct
113	Correct	761 ms	17216 KB	Output is correct
114	Correct	747 ms	17124 KB	Output is correct
115	Correct	778 ms	17148 KB	Output is correct
116	Correct	759 ms	17132 KB	Output is correct
117	Correct	777 ms	17132 KB	Output is correct
118	Correct	776 ms	17132 KB	Output is correct
119	Correct	737 ms	17168 KB	Output is correct
120	Correct	2 ms	640 KB	Output is correct
121	Correct	2 ms	512 KB	Output is correct
122	Correct	874 ms	17132 KB	Output is correct
123	Correct	945 ms	17132 KB	Output is correct
124	Correct	852 ms	17204 KB	Output is correct
125	Correct	870 ms	17164 KB	Output is correct
126	Correct	857 ms	17176 KB	Output is correct
127	Correct	881 ms	17116 KB	Output is correct
128	Correct	891 ms	17260 KB	Output is correct
129	Correct	996 ms	17132 KB	Output is correct
130	Correct	889 ms	17216 KB	Output is correct
131	Correct	917 ms	17132 KB	Output is correct
132	Correct	888 ms	17124 KB	Output is correct
133	Correct	890 ms	17224 KB	Output is correct

답안 #32623

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 20.0 / 20.0

Subtask #3 35.0 / 35.0

Subtask #4 20.0 / 20.0

Subtask #5 20.0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
20.0 / 20.0

Subtask #3
35.0 / 35.0

Subtask #4
20.0 / 20.0

Subtask #5
20.0 / 20.0