답안 #270451

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
270451	2020-08-17T15:47:33 Z	cgiosy	Bulldozer (JOI17_bulldozer)	C++17	80 / 100	595 ms	31996 KB

bulldozer

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

struct node {
	ll mx, lm, rm, sum;
	node operator+(const node R) const {
		return {
			max({mx, R.mx, rm+R.lm}),
			max(lm, sum+R.lm),
			max(R.rm, rm+R.sum),
			sum+R.sum
		};
	}
};
struct point { int x, y; };
struct event {
	int x, y, i, j;
	bool operator<(const event& R) const {
		return ll(x)*R.y<ll(y)*R.x;
	}
};
int main() {
	ios::sync_with_stdio(0);cin.tie(0);
	int N;
	cin>>N;
	const int M=1<<32-__builtin_clz(N), K=N*(N-1)/2;
	vector<point> A(N);
	vector<int> W(N), P(N), X(N);
	for(int i=0; i<N; i++)
		cin>>A[i].x>>A[i].y>>W[i];
	iota(begin(X), end(X), 0);
	sort(begin(X), end(X), [&](int i, int j) {
		return A[i].x<A[j].x || A[i].x==A[j].x && A[i].y<A[j].y;
	});
	for(int i=0; i<N; i++) P[X[i]]=i;
	decltype(X)().swap(X);

	vector<event> E(K);
	for(int i=0, k=0; i<N; i++) for(int j=0; j<i; j++) {
		int x=A[i].x-A[j].x, y=A[i].y-A[j].y;
		if(x<0 || !x && y<0) x=-x, y=-y;
		E[k++]={x, y, i, j};
	}
	sort(begin(E), end(E));

	vector<node> T(M*2);
	auto upd=[&](int i, int x) {
		for(T[i+=M]={x, x, x, x}; i>>=1;)
			T[i]=T[i*2]+T[i*2+1];
	};
	for(int i=0; i<N; i++) {
		int x=W[i];
		T[P[i]+M]={x, x, x, x};
	}
	for(int i=M; i--;)
		T[i]=T[i*2]+T[i*2+1];

	ll mx=T[1].mx;
	for(int k=0; k<K; k++) {
		auto[x,y,i,j]=E[k];
		swap(P[i], P[j]);
		upd(P[i], W[i]);
		upd(P[j], W[j]);
		if(k+1==K || !(E[k]<E[k+1])) continue;
		mx=max(mx, T[1].mx);
	}
	cout<<max(mx, ll(0))<<'\n';
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:27:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   27 |  const int M=1<<32-__builtin_clz(N), K=N*(N-1)/2;
      |                 ~~^~~~~~~~~~~~~~~~~
bulldozer.cpp: In lambda function:
bulldozer.cpp:34:42: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   34 |   return A[i].x<A[j].x || A[i].x==A[j].x && A[i].y<A[j].y;
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:42:16: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   42 |   if(x<0 || !x && y<0) x=-x, y=-y;
      |             ~~~^~~~~~

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	512 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	0 ms	384 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	0 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	416 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	1 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	1 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	1 ms	384 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	0 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	416 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	1 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	1 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	1 ms	384 KB	Output is correct
33	Correct	544 ms	31992 KB	Output is correct
34	Correct	548 ms	31860 KB	Output is correct
35	Correct	542 ms	31864 KB	Output is correct
36	Correct	582 ms	31864 KB	Output is correct
37	Correct	584 ms	31864 KB	Output is correct
38	Correct	557 ms	31864 KB	Output is correct
39	Correct	573 ms	31736 KB	Output is correct
40	Correct	561 ms	31736 KB	Output is correct
41	Correct	546 ms	31736 KB	Output is correct
42	Correct	541 ms	31864 KB	Output is correct
43	Correct	548 ms	31864 KB	Output is correct
44	Correct	566 ms	31864 KB	Output is correct
45	Correct	536 ms	31736 KB	Output is correct
46	Correct	540 ms	31896 KB	Output is correct
47	Correct	536 ms	31864 KB	Output is correct
48	Correct	548 ms	31868 KB	Output is correct
49	Correct	538 ms	31992 KB	Output is correct
50	Correct	543 ms	31864 KB	Output is correct
51	Correct	576 ms	31736 KB	Output is correct
52	Correct	586 ms	31736 KB	Output is correct
53	Correct	549 ms	31860 KB	Output is correct
54	Correct	552 ms	31864 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	0 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	416 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	1 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	1 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	1 ms	384 KB	Output is correct
33	Correct	544 ms	31992 KB	Output is correct
34	Correct	548 ms	31860 KB	Output is correct
35	Correct	542 ms	31864 KB	Output is correct
36	Correct	582 ms	31864 KB	Output is correct
37	Correct	584 ms	31864 KB	Output is correct
38	Correct	557 ms	31864 KB	Output is correct
39	Correct	573 ms	31736 KB	Output is correct
40	Correct	561 ms	31736 KB	Output is correct
41	Correct	546 ms	31736 KB	Output is correct
42	Correct	541 ms	31864 KB	Output is correct
43	Correct	548 ms	31864 KB	Output is correct
44	Correct	566 ms	31864 KB	Output is correct
45	Correct	536 ms	31736 KB	Output is correct
46	Correct	540 ms	31896 KB	Output is correct
47	Correct	536 ms	31864 KB	Output is correct
48	Correct	548 ms	31868 KB	Output is correct
49	Correct	538 ms	31992 KB	Output is correct
50	Correct	543 ms	31864 KB	Output is correct
51	Correct	576 ms	31736 KB	Output is correct
52	Correct	586 ms	31736 KB	Output is correct
53	Correct	549 ms	31860 KB	Output is correct
54	Correct	552 ms	31864 KB	Output is correct
55	Correct	534 ms	31864 KB	Output is correct
56	Correct	541 ms	31736 KB	Output is correct
57	Correct	542 ms	31864 KB	Output is correct
58	Correct	542 ms	31864 KB	Output is correct
59	Correct	539 ms	31864 KB	Output is correct
60	Correct	540 ms	31736 KB	Output is correct
61	Correct	541 ms	31740 KB	Output is correct
62	Correct	542 ms	31864 KB	Output is correct
63	Correct	595 ms	31864 KB	Output is correct
64	Correct	550 ms	31868 KB	Output is correct
65	Correct	566 ms	31864 KB	Output is correct
66	Correct	568 ms	31988 KB	Output is correct
67	Correct	563 ms	31992 KB	Output is correct
68	Correct	541 ms	31864 KB	Output is correct
69	Correct	542 ms	31864 KB	Output is correct
70	Correct	577 ms	31864 KB	Output is correct
71	Correct	560 ms	31864 KB	Output is correct
72	Correct	540 ms	31860 KB	Output is correct
73	Correct	566 ms	31996 KB	Output is correct
74	Correct	551 ms	31864 KB	Output is correct

Subtask #5
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	512 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	0 ms	384 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	0 ms	384 KB	Output is correct
27	Correct	0 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	0 ms	384 KB	Output is correct
31	Correct	0 ms	384 KB	Output is correct
32	Correct	0 ms	384 KB	Output is correct
33	Correct	0 ms	384 KB	Output is correct
34	Correct	0 ms	384 KB	Output is correct
35	Correct	1 ms	384 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	1 ms	384 KB	Output is correct
38	Correct	1 ms	416 KB	Output is correct
39	Correct	2 ms	384 KB	Output is correct
40	Correct	2 ms	384 KB	Output is correct
41	Correct	1 ms	384 KB	Output is correct
42	Correct	1 ms	384 KB	Output is correct
43	Correct	1 ms	384 KB	Output is correct
44	Correct	2 ms	384 KB	Output is correct
45	Correct	1 ms	384 KB	Output is correct
46	Correct	2 ms	384 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	544 ms	31992 KB	Output is correct
49	Correct	548 ms	31860 KB	Output is correct
50	Correct	542 ms	31864 KB	Output is correct
51	Correct	582 ms	31864 KB	Output is correct
52	Correct	584 ms	31864 KB	Output is correct
53	Correct	557 ms	31864 KB	Output is correct
54	Correct	573 ms	31736 KB	Output is correct
55	Correct	561 ms	31736 KB	Output is correct
56	Correct	546 ms	31736 KB	Output is correct
57	Correct	541 ms	31864 KB	Output is correct
58	Correct	548 ms	31864 KB	Output is correct
59	Correct	566 ms	31864 KB	Output is correct
60	Correct	536 ms	31736 KB	Output is correct
61	Correct	540 ms	31896 KB	Output is correct
62	Correct	536 ms	31864 KB	Output is correct
63	Correct	548 ms	31868 KB	Output is correct
64	Correct	538 ms	31992 KB	Output is correct
65	Correct	543 ms	31864 KB	Output is correct
66	Correct	576 ms	31736 KB	Output is correct
67	Correct	586 ms	31736 KB	Output is correct
68	Correct	549 ms	31860 KB	Output is correct
69	Correct	552 ms	31864 KB	Output is correct
70	Correct	534 ms	31864 KB	Output is correct
71	Correct	541 ms	31736 KB	Output is correct
72	Correct	542 ms	31864 KB	Output is correct
73	Correct	542 ms	31864 KB	Output is correct
74	Correct	539 ms	31864 KB	Output is correct
75	Correct	540 ms	31736 KB	Output is correct
76	Correct	541 ms	31740 KB	Output is correct
77	Correct	542 ms	31864 KB	Output is correct
78	Correct	595 ms	31864 KB	Output is correct
79	Correct	550 ms	31868 KB	Output is correct
80	Correct	566 ms	31864 KB	Output is correct
81	Correct	568 ms	31988 KB	Output is correct
82	Correct	563 ms	31992 KB	Output is correct
83	Correct	541 ms	31864 KB	Output is correct
84	Correct	542 ms	31864 KB	Output is correct
85	Correct	577 ms	31864 KB	Output is correct
86	Correct	560 ms	31864 KB	Output is correct
87	Correct	540 ms	31860 KB	Output is correct
88	Correct	566 ms	31996 KB	Output is correct
89	Correct	551 ms	31864 KB	Output is correct
90	Correct	561 ms	31864 KB	Output is correct
91	Correct	550 ms	31992 KB	Output is correct
92	Correct	544 ms	31988 KB	Output is correct
93	Correct	563 ms	31864 KB	Output is correct
94	Correct	554 ms	31868 KB	Output is correct
95	Correct	559 ms	31988 KB	Output is correct
96	Correct	542 ms	31864 KB	Output is correct
97	Correct	546 ms	31864 KB	Output is correct
98	Correct	550 ms	31988 KB	Output is correct
99	Correct	550 ms	31736 KB	Output is correct
100	Incorrect	460 ms	31992 KB	Output isn't correct
101	Halted	0 ms	0 KB	-

답안 #270451

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 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
0 / 20.0