답안 #36042 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
36042	2017-12-04T14:41:04 Z	cheater2k	Bulldozer (JOI17_bulldozer)	C++14	100 / 100	1074 ms	32536 KB

bulldozer

#include <bits/stdc++.h>
using namespace std;

const int N = 2005;
const long long inf = 1e18;

struct SegmentTree {
	struct Node {
		long long val; long long pre; long long suf; long long sum;
		Node() { val = -inf; sum = pre = suf = 0; }
	} it[N << 2];

	#define mid ((l + r) >> 1)
	Node merge(Node le, Node ri) {
		Node cur = Node();
		cur.sum = le.sum + ri.sum;
		cur.val = max({le.val, ri.val, le.suf + ri.pre});
		cur.pre = max(le.pre, le.sum + ri.pre);
		cur.suf = max(ri.suf, ri.sum + le.suf);
		return cur;
	}
	void upd(int v, int l, int r, int pos, int val) {
		if (l > r || l > pos || r < pos) return;
		if (l == r) { it[v].val = it[v].pre = it[v].suf = it[v].sum = val; return; }
		upd(v << 1, l, mid, pos, val); upd(v << 1 | 1, mid + 1, r, pos, val);
		it[v] = merge(it[v << 1], it[v << 1 | 1]);
	}
	long long get() { return it[1].val; }
	#undef mid
} seg;

struct Point {
	int x; int y; int w;
	Point(int x=0, int y=0, int w=0): x(x), y(y), w(w) {}
	bool operator < (const Point &rhs) const {
		return y < rhs.y || (y == rhs.y && x < rhs.x);
	}
	Point operator - (Point q) { Point p = *this; return Point(p.x - q.x, p.y - q.y); }
} a[N];

long long cross(Point a, Point b) {
	return 1LL * a.x * b.y - 1LL * a.y * b.x;
}

long long cmp(pair<int,int> p, pair<int,int> q) {
	long long flag = cross(a[p.second] - a[p.first], a[q.second] - a[q.first]);
	return flag;
}

int n;
vector< pair<int,int> > vec;
long long ans;
int pos[N];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n;
	for (int i = 1; i <= n; ++i) cin >> a[i].x >> a[i].y >> a[i].w;
	sort(a + 1, a + n + 1);	
	for (int i = 1; i < n; ++i) {
		for (int j = i + 1; j <= n; ++j) {
			vec.push_back(make_pair(i,j));
		}
	}
	sort(vec.begin(), vec.end(), [&](pair<int,int> p, pair<int,int> q) {
		long long flag = cmp(p, q);
		if (flag != 0) return flag > 0; else return make_pair(a[p.first], a[p.second]) < make_pair(a[q.first], a[q.second]);
	});

	for (int i = 1; i <= n; ++i) pos[i] = i;
	for (int i = 1; i <= n; ++i) seg.upd(1, 1, n, i, a[i].w);
	ans = max(ans, seg.get());

	for (int i = 0; i < vec.size(); ++i) {
		vector< pair<int,int> > Q;
		Q.push_back(vec[i]);
		while(i + 1 < vec.size() && cmp(vec[i], vec[i+1]) == 0) {
			Q.push_back(vec[i+1]); ++i;
		}
		for (auto p : Q) {
			swap(pos[p.first], pos[p.second]);
			seg.upd(1, 1, n, pos[p.first], a[p.first].w);
			seg.upd(1, 1, n, pos[p.second], a[p.second].w);
		}
		ans = max(ans, seg.get());
	}
	cout << ans << endl;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:74:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < vec.size(); ++i) {
                  ~~^~~~~~~~~~~~
bulldozer.cpp:77:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(i + 1 < vec.size() && cmp(vec[i], vec[i+1]) == 0) {
         ~~~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	768 KB	Output is correct
2	Correct	2 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	4 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	768 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	3 ms	640 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	768 KB	Output is correct
2	Correct	4 ms	768 KB	Output is correct
3	Correct	4 ms	768 KB	Output is correct
4	Correct	3 ms	768 KB	Output is correct
5	Correct	4 ms	768 KB	Output is correct
6	Correct	4 ms	768 KB	Output is correct
7	Correct	4 ms	768 KB	Output is correct
8	Correct	5 ms	768 KB	Output is correct
9	Correct	4 ms	768 KB	Output is correct
10	Correct	4 ms	740 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	2 ms	640 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	640 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	768 KB	Output is correct
23	Correct	3 ms	768 KB	Output is correct
24	Correct	4 ms	768 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	740 KB	Output is correct
27	Correct	4 ms	768 KB	Output is correct
28	Correct	4 ms	768 KB	Output is correct
29	Correct	4 ms	768 KB	Output is correct
30	Correct	4 ms	768 KB	Output is correct
31	Correct	4 ms	684 KB	Output is correct
32	Correct	4 ms	768 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	768 KB	Output is correct
2	Correct	4 ms	768 KB	Output is correct
3	Correct	4 ms	768 KB	Output is correct
4	Correct	3 ms	768 KB	Output is correct
5	Correct	4 ms	768 KB	Output is correct
6	Correct	4 ms	768 KB	Output is correct
7	Correct	4 ms	768 KB	Output is correct
8	Correct	5 ms	768 KB	Output is correct
9	Correct	4 ms	768 KB	Output is correct
10	Correct	4 ms	740 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	2 ms	640 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	640 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	768 KB	Output is correct
23	Correct	3 ms	768 KB	Output is correct
24	Correct	4 ms	768 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	740 KB	Output is correct
27	Correct	4 ms	768 KB	Output is correct
28	Correct	4 ms	768 KB	Output is correct
29	Correct	4 ms	768 KB	Output is correct
30	Correct	4 ms	768 KB	Output is correct
31	Correct	4 ms	684 KB	Output is correct
32	Correct	4 ms	768 KB	Output is correct
33	Correct	1074 ms	17132 KB	Output is correct
34	Correct	1002 ms	17132 KB	Output is correct
35	Correct	1030 ms	17216 KB	Output is correct
36	Correct	1012 ms	17120 KB	Output is correct
37	Correct	1028 ms	17220 KB	Output is correct
38	Correct	1039 ms	17120 KB	Output is correct
39	Correct	995 ms	17124 KB	Output is correct
40	Correct	1040 ms	17132 KB	Output is correct
41	Correct	997 ms	17180 KB	Output is correct
42	Correct	1000 ms	17132 KB	Output is correct
43	Correct	992 ms	17120 KB	Output is correct
44	Correct	983 ms	17220 KB	Output is correct
45	Correct	1059 ms	17132 KB	Output is correct
46	Correct	987 ms	17132 KB	Output is correct
47	Correct	1000 ms	17248 KB	Output is correct
48	Correct	1061 ms	17136 KB	Output is correct
49	Correct	1016 ms	17124 KB	Output is correct
50	Correct	1045 ms	17260 KB	Output is correct
51	Correct	1006 ms	17232 KB	Output is correct
52	Correct	987 ms	17132 KB	Output is correct
53	Correct	989 ms	17220 KB	Output is correct
54	Correct	999 ms	17132 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	768 KB	Output is correct
2	Correct	4 ms	768 KB	Output is correct
3	Correct	4 ms	768 KB	Output is correct
4	Correct	3 ms	768 KB	Output is correct
5	Correct	4 ms	768 KB	Output is correct
6	Correct	4 ms	768 KB	Output is correct
7	Correct	4 ms	768 KB	Output is correct
8	Correct	5 ms	768 KB	Output is correct
9	Correct	4 ms	768 KB	Output is correct
10	Correct	4 ms	740 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	2 ms	640 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	640 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	768 KB	Output is correct
23	Correct	3 ms	768 KB	Output is correct
24	Correct	4 ms	768 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	740 KB	Output is correct
27	Correct	4 ms	768 KB	Output is correct
28	Correct	4 ms	768 KB	Output is correct
29	Correct	4 ms	768 KB	Output is correct
30	Correct	4 ms	768 KB	Output is correct
31	Correct	4 ms	684 KB	Output is correct
32	Correct	4 ms	768 KB	Output is correct
33	Correct	1074 ms	17132 KB	Output is correct
34	Correct	1002 ms	17132 KB	Output is correct
35	Correct	1030 ms	17216 KB	Output is correct
36	Correct	1012 ms	17120 KB	Output is correct
37	Correct	1028 ms	17220 KB	Output is correct
38	Correct	1039 ms	17120 KB	Output is correct
39	Correct	995 ms	17124 KB	Output is correct
40	Correct	1040 ms	17132 KB	Output is correct
41	Correct	997 ms	17180 KB	Output is correct
42	Correct	1000 ms	17132 KB	Output is correct
43	Correct	992 ms	17120 KB	Output is correct
44	Correct	983 ms	17220 KB	Output is correct
45	Correct	1059 ms	17132 KB	Output is correct
46	Correct	987 ms	17132 KB	Output is correct
47	Correct	1000 ms	17248 KB	Output is correct
48	Correct	1061 ms	17136 KB	Output is correct
49	Correct	1016 ms	17124 KB	Output is correct
50	Correct	1045 ms	17260 KB	Output is correct
51	Correct	1006 ms	17232 KB	Output is correct
52	Correct	987 ms	17132 KB	Output is correct
53	Correct	989 ms	17220 KB	Output is correct
54	Correct	999 ms	17132 KB	Output is correct
55	Correct	997 ms	17176 KB	Output is correct
56	Correct	1014 ms	17192 KB	Output is correct
57	Correct	1012 ms	17132 KB	Output is correct
58	Correct	1042 ms	17260 KB	Output is correct
59	Correct	1052 ms	17132 KB	Output is correct
60	Correct	1037 ms	17232 KB	Output is correct
61	Correct	1054 ms	17124 KB	Output is correct
62	Correct	1025 ms	17244 KB	Output is correct
63	Correct	1036 ms	17132 KB	Output is correct
64	Correct	1010 ms	17236 KB	Output is correct
65	Correct	1002 ms	17164 KB	Output is correct
66	Correct	1042 ms	17224 KB	Output is correct
67	Correct	1010 ms	17260 KB	Output is correct
68	Correct	996 ms	17132 KB	Output is correct
69	Correct	995 ms	17260 KB	Output is correct
70	Correct	997 ms	17272 KB	Output is correct
71	Correct	999 ms	17120 KB	Output is correct
72	Correct	1006 ms	17248 KB	Output is correct
73	Correct	1000 ms	17132 KB	Output is correct
74	Correct	1022 ms	17252 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	2 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	4 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	768 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	3 ms	640 KB	Output is correct
16	Correct	4 ms	768 KB	Output is correct
17	Correct	4 ms	768 KB	Output is correct
18	Correct	4 ms	768 KB	Output is correct
19	Correct	3 ms	768 KB	Output is correct
20	Correct	4 ms	768 KB	Output is correct
21	Correct	4 ms	768 KB	Output is correct
22	Correct	4 ms	768 KB	Output is correct
23	Correct	5 ms	768 KB	Output is correct
24	Correct	4 ms	768 KB	Output is correct
25	Correct	4 ms	740 KB	Output is correct
26	Correct	2 ms	640 KB	Output is correct
27	Correct	2 ms	640 KB	Output is correct
28	Correct	2 ms	640 KB	Output is correct
29	Correct	2 ms	640 KB	Output is correct
30	Correct	2 ms	640 KB	Output is correct
31	Correct	2 ms	640 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	640 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	768 KB	Output is correct
38	Correct	3 ms	768 KB	Output is correct
39	Correct	4 ms	768 KB	Output is correct
40	Correct	4 ms	768 KB	Output is correct
41	Correct	4 ms	740 KB	Output is correct
42	Correct	4 ms	768 KB	Output is correct
43	Correct	4 ms	768 KB	Output is correct
44	Correct	4 ms	768 KB	Output is correct
45	Correct	4 ms	768 KB	Output is correct
46	Correct	4 ms	684 KB	Output is correct
47	Correct	4 ms	768 KB	Output is correct
48	Correct	1074 ms	17132 KB	Output is correct
49	Correct	1002 ms	17132 KB	Output is correct
50	Correct	1030 ms	17216 KB	Output is correct
51	Correct	1012 ms	17120 KB	Output is correct
52	Correct	1028 ms	17220 KB	Output is correct
53	Correct	1039 ms	17120 KB	Output is correct
54	Correct	995 ms	17124 KB	Output is correct
55	Correct	1040 ms	17132 KB	Output is correct
56	Correct	997 ms	17180 KB	Output is correct
57	Correct	1000 ms	17132 KB	Output is correct
58	Correct	992 ms	17120 KB	Output is correct
59	Correct	983 ms	17220 KB	Output is correct
60	Correct	1059 ms	17132 KB	Output is correct
61	Correct	987 ms	17132 KB	Output is correct
62	Correct	1000 ms	17248 KB	Output is correct
63	Correct	1061 ms	17136 KB	Output is correct
64	Correct	1016 ms	17124 KB	Output is correct
65	Correct	1045 ms	17260 KB	Output is correct
66	Correct	1006 ms	17232 KB	Output is correct
67	Correct	987 ms	17132 KB	Output is correct
68	Correct	989 ms	17220 KB	Output is correct
69	Correct	999 ms	17132 KB	Output is correct
70	Correct	997 ms	17176 KB	Output is correct
71	Correct	1014 ms	17192 KB	Output is correct
72	Correct	1012 ms	17132 KB	Output is correct
73	Correct	1042 ms	17260 KB	Output is correct
74	Correct	1052 ms	17132 KB	Output is correct
75	Correct	1037 ms	17232 KB	Output is correct
76	Correct	1054 ms	17124 KB	Output is correct
77	Correct	1025 ms	17244 KB	Output is correct
78	Correct	1036 ms	17132 KB	Output is correct
79	Correct	1010 ms	17236 KB	Output is correct
80	Correct	1002 ms	17164 KB	Output is correct
81	Correct	1042 ms	17224 KB	Output is correct
82	Correct	1010 ms	17260 KB	Output is correct
83	Correct	996 ms	17132 KB	Output is correct
84	Correct	995 ms	17260 KB	Output is correct
85	Correct	997 ms	17272 KB	Output is correct
86	Correct	999 ms	17120 KB	Output is correct
87	Correct	1006 ms	17248 KB	Output is correct
88	Correct	1000 ms	17132 KB	Output is correct
89	Correct	1022 ms	17252 KB	Output is correct
90	Correct	1014 ms	17132 KB	Output is correct
91	Correct	989 ms	17132 KB	Output is correct
92	Correct	993 ms	17248 KB	Output is correct
93	Correct	1028 ms	17124 KB	Output is correct
94	Correct	1038 ms	17124 KB	Output is correct
95	Correct	1037 ms	17132 KB	Output is correct
96	Correct	1039 ms	17124 KB	Output is correct
97	Correct	1025 ms	17124 KB	Output is correct
98	Correct	1034 ms	17252 KB	Output is correct
99	Correct	1039 ms	17124 KB	Output is correct
100	Correct	907 ms	32536 KB	Output is correct
101	Correct	939 ms	32320 KB	Output is correct
102	Correct	882 ms	32440 KB	Output is correct
103	Correct	866 ms	32360 KB	Output is correct
104	Correct	897 ms	32448 KB	Output is correct
105	Correct	937 ms	29632 KB	Output is correct
106	Correct	943 ms	29764 KB	Output is correct
107	Correct	982 ms	29616 KB	Output is correct
108	Correct	941 ms	29756 KB	Output is correct
109	Correct	934 ms	29632 KB	Output is correct
110	Correct	892 ms	17116 KB	Output is correct
111	Correct	894 ms	17132 KB	Output is correct
112	Correct	915 ms	17220 KB	Output is correct
113	Correct	906 ms	17124 KB	Output is correct
114	Correct	901 ms	17120 KB	Output is correct
115	Correct	905 ms	17124 KB	Output is correct
116	Correct	906 ms	17160 KB	Output is correct
117	Correct	909 ms	17124 KB	Output is correct
118	Correct	892 ms	17172 KB	Output is correct
119	Correct	908 ms	17248 KB	Output is correct
120	Correct	2 ms	640 KB	Output is correct
121	Correct	3 ms	640 KB	Output is correct
122	Correct	1006 ms	17156 KB	Output is correct
123	Correct	1008 ms	17124 KB	Output is correct
124	Correct	989 ms	17124 KB	Output is correct
125	Correct	1002 ms	17224 KB	Output is correct
126	Correct	1010 ms	17128 KB	Output is correct
127	Correct	997 ms	17132 KB	Output is correct
128	Correct	1000 ms	17132 KB	Output is correct
129	Correct	1022 ms	17132 KB	Output is correct
130	Correct	992 ms	17132 KB	Output is correct
131	Correct	1004 ms	17132 KB	Output is correct
132	Correct	1002 ms	17132 KB	Output is correct
133	Correct	992 ms	17124 KB	Output is correct

답안 #36042

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