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답안 #270473

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
270473 2020-08-17T16:17:38 Z cgiosy Bulldozer (JOI17_bulldozer) C++17
100 / 100
 592 ms 47480 KB 
#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 spot {
	int x, y, w;
	bool operator<(const spot R) const {
		return x<R.x || x==R.x && y<R.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, K=0;
	cin>>N;
	const int M=1<<32-__builtin_clz(N);
	vector<spot> A(N);
	for(auto&[x,y,w]:A) cin>>x>>y>>w;
	sort(begin(A), end(A));

	vector<event> E(N*(N-1)/2);
	for(int i=0; i<N; i++) for(int j=0; j<i; j++)
		E[K++]={A[i].x-A[j].x, A[i].y-A[j].y, j, i};
	stable_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=A[i].w;
		T[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;
	vector<int> P(N);
	iota(begin(P), end(P), 0);
	for(int k=0; k<K; k++) {
		auto[x,y,i,j]=E[k];
		swap(P[i], P[j]);
		upd(P[i], A[i].w);
		upd(P[j], A[j].w);
		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 member function 'bool spot::operator<(spot) const':
bulldozer.cpp:19:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   19 |   return x<R.x || x==R.x && y<R.y;
      |                   ~~~~~~~^~~~~~~~
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:32:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   32 |  const int M=1<<32-__builtin_clz(N);
      |                 ~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 508 KB Output is correct
6 Correct 1 ms 508 KB Output is correct
7 Correct 1 ms 636 KB Output is correct
8 Correct 1 ms 508 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 508 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 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

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 1 ms 508 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 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 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 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 508 KB Output is correct
24 Correct 2 ms 416 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 508 KB Output is correct
28 Correct 1 ms 508 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 508 KB Output is correct
32 Correct 2 ms 508 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 1 ms 508 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 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 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 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 508 KB Output is correct
24 Correct 2 ms 416 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 508 KB Output is correct
28 Correct 1 ms 508 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 508 KB Output is correct
32 Correct 2 ms 508 KB Output is correct
33 Correct 561 ms 47372 KB Output is correct
34 Correct 565 ms 47480 KB Output is correct
35 Correct 563 ms 47352 KB Output is correct
36 Correct 581 ms 47372 KB Output is correct
37 Correct 563 ms 47352 KB Output is correct
38 Correct 577 ms 47368 KB Output is correct
39 Correct 558 ms 47480 KB Output is correct
40 Correct 588 ms 47372 KB Output is correct
41 Correct 575 ms 47480 KB Output is correct
42 Correct 571 ms 47352 KB Output is correct
43 Correct 571 ms 47352 KB Output is correct
44 Correct 554 ms 47376 KB Output is correct
45 Correct 550 ms 47352 KB Output is correct
46 Correct 555 ms 47356 KB Output is correct
47 Correct 553 ms 47352 KB Output is correct
48 Correct 552 ms 47352 KB Output is correct
49 Correct 560 ms 47440 KB Output is correct
50 Correct 566 ms 47356 KB Output is correct
51 Correct 574 ms 47480 KB Output is correct
52 Correct 558 ms 47352 KB Output is correct
53 Correct 559 ms 47480 KB Output is correct
54 Correct 579 ms 47480 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 1 ms 508 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 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 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 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 508 KB Output is correct
24 Correct 2 ms 416 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 508 KB Output is correct
28 Correct 1 ms 508 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 508 KB Output is correct
32 Correct 2 ms 508 KB Output is correct
33 Correct 561 ms 47372 KB Output is correct
34 Correct 565 ms 47480 KB Output is correct
35 Correct 563 ms 47352 KB Output is correct
36 Correct 581 ms 47372 KB Output is correct
37 Correct 563 ms 47352 KB Output is correct
38 Correct 577 ms 47368 KB Output is correct
39 Correct 558 ms 47480 KB Output is correct
40 Correct 588 ms 47372 KB Output is correct
41 Correct 575 ms 47480 KB Output is correct
42 Correct 571 ms 47352 KB Output is correct
43 Correct 571 ms 47352 KB Output is correct
44 Correct 554 ms 47376 KB Output is correct
45 Correct 550 ms 47352 KB Output is correct
46 Correct 555 ms 47356 KB Output is correct
47 Correct 553 ms 47352 KB Output is correct
48 Correct 552 ms 47352 KB Output is correct
49 Correct 560 ms 47440 KB Output is correct
50 Correct 566 ms 47356 KB Output is correct
51 Correct 574 ms 47480 KB Output is correct
52 Correct 558 ms 47352 KB Output is correct
53 Correct 559 ms 47480 KB Output is correct
54 Correct 579 ms 47480 KB Output is correct
55 Correct 571 ms 47480 KB Output is correct
56 Correct 568 ms 47352 KB Output is correct
57 Correct 585 ms 47480 KB Output is correct
58 Correct 571 ms 47480 KB Output is correct
59 Correct 566 ms 47352 KB Output is correct
60 Correct 560 ms 47352 KB Output is correct
61 Correct 569 ms 47352 KB Output is correct
62 Correct 571 ms 47352 KB Output is correct
63 Correct 560 ms 47352 KB Output is correct
64 Correct 565 ms 47352 KB Output is correct
65 Correct 562 ms 47352 KB Output is correct
66 Correct 569 ms 47480 KB Output is correct
67 Correct 575 ms 47352 KB Output is correct
68 Correct 564 ms 47480 KB Output is correct
69 Correct 559 ms 47352 KB Output is correct
70 Correct 568 ms 47352 KB Output is correct
71 Correct 562 ms 47356 KB Output is correct
72 Correct 556 ms 47352 KB Output is correct
73 Correct 578 ms 47352 KB Output is correct
74 Correct 563 ms 47352 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 508 KB Output is correct
6 Correct 1 ms 508 KB Output is correct
7 Correct 1 ms 636 KB Output is correct
8 Correct 1 ms 508 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 508 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 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 2 ms 384 KB Output is correct
17 Correct 2 ms 508 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 1 ms 508 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 508 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 0 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 1 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 0 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 2 ms 384 KB Output is correct
38 Correct 1 ms 508 KB Output is correct
39 Correct 2 ms 416 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 1 ms 508 KB Output is correct
43 Correct 1 ms 508 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 1 ms 508 KB Output is correct
46 Correct 1 ms 508 KB Output is correct
47 Correct 2 ms 508 KB Output is correct
48 Correct 561 ms 47372 KB Output is correct
49 Correct 565 ms 47480 KB Output is correct
50 Correct 563 ms 47352 KB Output is correct
51 Correct 581 ms 47372 KB Output is correct
52 Correct 563 ms 47352 KB Output is correct
53 Correct 577 ms 47368 KB Output is correct
54 Correct 558 ms 47480 KB Output is correct
55 Correct 588 ms 47372 KB Output is correct
56 Correct 575 ms 47480 KB Output is correct
57 Correct 571 ms 47352 KB Output is correct
58 Correct 571 ms 47352 KB Output is correct
59 Correct 554 ms 47376 KB Output is correct
60 Correct 550 ms 47352 KB Output is correct
61 Correct 555 ms 47356 KB Output is correct
62 Correct 553 ms 47352 KB Output is correct
63 Correct 552 ms 47352 KB Output is correct
64 Correct 560 ms 47440 KB Output is correct
65 Correct 566 ms 47356 KB Output is correct
66 Correct 574 ms 47480 KB Output is correct
67 Correct 558 ms 47352 KB Output is correct
68 Correct 559 ms 47480 KB Output is correct
69 Correct 579 ms 47480 KB Output is correct
70 Correct 571 ms 47480 KB Output is correct
71 Correct 568 ms 47352 KB Output is correct
72 Correct 585 ms 47480 KB Output is correct
73 Correct 571 ms 47480 KB Output is correct
74 Correct 566 ms 47352 KB Output is correct
75 Correct 560 ms 47352 KB Output is correct
76 Correct 569 ms 47352 KB Output is correct
77 Correct 571 ms 47352 KB Output is correct
78 Correct 560 ms 47352 KB Output is correct
79 Correct 565 ms 47352 KB Output is correct
80 Correct 562 ms 47352 KB Output is correct
81 Correct 569 ms 47480 KB Output is correct
82 Correct 575 ms 47352 KB Output is correct
83 Correct 564 ms 47480 KB Output is correct
84 Correct 559 ms 47352 KB Output is correct
85 Correct 568 ms 47352 KB Output is correct
86 Correct 562 ms 47356 KB Output is correct
87 Correct 556 ms 47352 KB Output is correct
88 Correct 578 ms 47352 KB Output is correct
89 Correct 563 ms 47352 KB Output is correct
90 Correct 565 ms 47364 KB Output is correct
91 Correct 583 ms 47368 KB Output is correct
92 Correct 590 ms 47480 KB Output is correct
93 Correct 567 ms 47464 KB Output is correct
94 Correct 563 ms 47352 KB Output is correct
95 Correct 561 ms 47352 KB Output is correct
96 Correct 563 ms 47480 KB Output is correct
97 Correct 586 ms 47480 KB Output is correct
98 Correct 565 ms 47352 KB Output is correct
99 Correct 562 ms 47352 KB Output is correct
100 Correct 440 ms 47360 KB Output is correct
101 Correct 430 ms 47352 KB Output is correct
102 Correct 435 ms 47352 KB Output is correct
103 Correct 437 ms 47352 KB Output is correct
104 Correct 438 ms 47352 KB Output is correct
105 Correct 458 ms 47480 KB Output is correct
106 Correct 463 ms 47352 KB Output is correct
107 Correct 462 ms 47480 KB Output is correct
108 Correct 455 ms 47360 KB Output is correct
109 Correct 468 ms 47352 KB Output is correct
110 Correct 432 ms 47352 KB Output is correct
111 Correct 439 ms 47480 KB Output is correct
112 Correct 432 ms 47360 KB Output is correct
113 Correct 475 ms 47480 KB Output is correct
114 Correct 436 ms 47480 KB Output is correct
115 Correct 424 ms 47352 KB Output is correct
116 Correct 430 ms 47360 KB Output is correct
117 Correct 425 ms 47352 KB Output is correct
118 Correct 428 ms 47480 KB Output is correct
119 Correct 456 ms 47352 KB Output is correct
120 Correct 1 ms 384 KB Output is correct
121 Correct 0 ms 384 KB Output is correct
122 Correct 564 ms 47352 KB Output is correct
123 Correct 554 ms 47352 KB Output is correct
124 Correct 547 ms 47352 KB Output is correct
125 Correct 555 ms 47352 KB Output is correct
126 Correct 558 ms 47480 KB Output is correct
127 Correct 559 ms 47480 KB Output is correct
128 Correct 567 ms 47352 KB Output is correct
129 Correct 575 ms 47480 KB Output is correct
130 Correct 592 ms 47480 KB Output is correct
131 Correct 552 ms 47480 KB Output is correct
132 Correct 557 ms 47352 KB Output is correct
133 Correct 549 ms 47352 KB Output is correct