oj.uz

Submission #270520

# Submission time Handle Problem Language Result Execution time Memory
270520 2020-08-17T17:23:33 Z cgiosy Bulldozer (JOI17_bulldozer) C++17
100 / 100
 619 ms 24184 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;
	bool operator<(const event R) const {
		ll a=ll(x)*R.y, b=ll(y)*R.x;
		return a<b || a==b && i<R.i;
	}
};
int main() {
	ios::sync_with_stdio(0);cin.tie(0);
	int N, K=0;
	cin>>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, i<<16|j};
	sort(begin(E), end(E));

	vector<node> T(4096);
	auto upd=[&](int i, int x) {
		for(T[i|=2048]={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+2048]={x, x, x, x};
	}
	for(int i=2048; 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,t]=E[k];
		int i=t>>16, j=t&65535;
		swap(P[i], P[j]);
		upd(P[i], A[i].w);
		upd(P[j], A[j].w);
		if(k+1<K && ll(E[k].x)*E[k+1].y==ll(E[k+1].x)*E[k].y) continue;
		mx=max(mx, T[1].mx);
	}
	cout<<mx<<'\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 member function 'bool event::operator<(event) const':
bulldozer.cpp:26:22: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |   return a<b || a==b && i<R.i;
      |                 ~~~~~^~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 544 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 0 ms 512 KB Output is correct
13 Correct 0 ms 512 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 0 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 0 ms 512 KB Output is correct
17 Correct 0 ms 512 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 0 ms 512 KB Output is correct
20 Correct 0 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 512 KB Output is correct
27 Correct 2 ms 512 KB Output is correct
28 Correct 2 ms 512 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 ms 512 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 0 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 0 ms 512 KB Output is correct
17 Correct 0 ms 512 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 0 ms 512 KB Output is correct
20 Correct 0 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 512 KB Output is correct
27 Correct 2 ms 512 KB Output is correct
28 Correct 2 ms 512 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 ms 512 KB Output is correct
33 Correct 585 ms 24024 KB Output is correct
34 Correct 573 ms 24056 KB Output is correct
35 Correct 603 ms 24024 KB Output is correct
36 Correct 579 ms 23928 KB Output is correct
37 Correct 577 ms 24056 KB Output is correct
38 Correct 574 ms 24056 KB Output is correct
39 Correct 578 ms 24020 KB Output is correct
40 Correct 573 ms 23928 KB Output is correct
41 Correct 573 ms 24056 KB Output is correct
42 Correct 574 ms 24056 KB Output is correct
43 Correct 585 ms 23928 KB Output is correct
44 Correct 589 ms 23928 KB Output is correct
45 Correct 579 ms 23928 KB Output is correct
46 Correct 574 ms 23928 KB Output is correct
47 Correct 569 ms 23928 KB Output is correct
48 Correct 592 ms 23928 KB Output is correct
49 Correct 589 ms 24148 KB Output is correct
50 Correct 606 ms 24056 KB Output is correct
51 Correct 570 ms 24056 KB Output is correct
52 Correct 601 ms 24184 KB Output is correct
53 Correct 569 ms 24060 KB Output is correct
54 Correct 576 ms 23928 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 0 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 0 ms 512 KB Output is correct
17 Correct 0 ms 512 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 0 ms 512 KB Output is correct
20 Correct 0 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 512 KB Output is correct
27 Correct 2 ms 512 KB Output is correct
28 Correct 2 ms 512 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 ms 512 KB Output is correct
33 Correct 585 ms 24024 KB Output is correct
34 Correct 573 ms 24056 KB Output is correct
35 Correct 603 ms 24024 KB Output is correct
36 Correct 579 ms 23928 KB Output is correct
37 Correct 577 ms 24056 KB Output is correct
38 Correct 574 ms 24056 KB Output is correct
39 Correct 578 ms 24020 KB Output is correct
40 Correct 573 ms 23928 KB Output is correct
41 Correct 573 ms 24056 KB Output is correct
42 Correct 574 ms 24056 KB Output is correct
43 Correct 585 ms 23928 KB Output is correct
44 Correct 589 ms 23928 KB Output is correct
45 Correct 579 ms 23928 KB Output is correct
46 Correct 574 ms 23928 KB Output is correct
47 Correct 569 ms 23928 KB Output is correct
48 Correct 592 ms 23928 KB Output is correct
49 Correct 589 ms 24148 KB Output is correct
50 Correct 606 ms 24056 KB Output is correct
51 Correct 570 ms 24056 KB Output is correct
52 Correct 601 ms 24184 KB Output is correct
53 Correct 569 ms 24060 KB Output is correct
54 Correct 576 ms 23928 KB Output is correct
55 Correct 574 ms 24016 KB Output is correct
56 Correct 578 ms 24068 KB Output is correct
57 Correct 577 ms 24056 KB Output is correct
58 Correct 581 ms 23928 KB Output is correct
59 Correct 573 ms 23928 KB Output is correct
60 Correct 573 ms 24028 KB Output is correct
61 Correct 571 ms 24036 KB Output is correct
62 Correct 578 ms 24056 KB Output is correct
63 Correct 587 ms 24184 KB Output is correct
64 Correct 573 ms 24020 KB Output is correct
65 Correct 583 ms 24184 KB Output is correct
66 Correct 578 ms 24056 KB Output is correct
67 Correct 578 ms 24068 KB Output is correct
68 Correct 582 ms 24056 KB Output is correct
69 Correct 577 ms 24056 KB Output is correct
70 Correct 613 ms 24184 KB Output is correct
71 Correct 618 ms 24148 KB Output is correct
72 Correct 578 ms 24056 KB Output is correct
73 Correct 581 ms 24016 KB Output is correct
74 Correct 587 ms 24056 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 2 ms 544 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 0 ms 512 KB Output is correct
13 Correct 0 ms 512 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 2 ms 512 KB Output is correct
17 Correct 2 ms 512 KB Output is correct
18 Correct 2 ms 512 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 0 ms 512 KB Output is correct
27 Correct 1 ms 512 KB Output is correct
28 Correct 1 ms 512 KB Output is correct
29 Correct 0 ms 512 KB Output is correct
30 Correct 0 ms 512 KB Output is correct
31 Correct 0 ms 512 KB Output is correct
32 Correct 0 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 0 ms 512 KB Output is correct
35 Correct 0 ms 512 KB Output is correct
36 Correct 2 ms 512 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 2 ms 512 KB Output is correct
39 Correct 2 ms 512 KB Output is correct
40 Correct 2 ms 512 KB Output is correct
41 Correct 2 ms 512 KB Output is correct
42 Correct 2 ms 512 KB Output is correct
43 Correct 2 ms 512 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 2 ms 512 KB Output is correct
46 Correct 2 ms 512 KB Output is correct
47 Correct 2 ms 512 KB Output is correct
48 Correct 585 ms 24024 KB Output is correct
49 Correct 573 ms 24056 KB Output is correct
50 Correct 603 ms 24024 KB Output is correct
51 Correct 579 ms 23928 KB Output is correct
52 Correct 577 ms 24056 KB Output is correct
53 Correct 574 ms 24056 KB Output is correct
54 Correct 578 ms 24020 KB Output is correct
55 Correct 573 ms 23928 KB Output is correct
56 Correct 573 ms 24056 KB Output is correct
57 Correct 574 ms 24056 KB Output is correct
58 Correct 585 ms 23928 KB Output is correct
59 Correct 589 ms 23928 KB Output is correct
60 Correct 579 ms 23928 KB Output is correct
61 Correct 574 ms 23928 KB Output is correct
62 Correct 569 ms 23928 KB Output is correct
63 Correct 592 ms 23928 KB Output is correct
64 Correct 589 ms 24148 KB Output is correct
65 Correct 606 ms 24056 KB Output is correct
66 Correct 570 ms 24056 KB Output is correct
67 Correct 601 ms 24184 KB Output is correct
68 Correct 569 ms 24060 KB Output is correct
69 Correct 576 ms 23928 KB Output is correct
70 Correct 574 ms 24016 KB Output is correct
71 Correct 578 ms 24068 KB Output is correct
72 Correct 577 ms 24056 KB Output is correct
73 Correct 581 ms 23928 KB Output is correct
74 Correct 573 ms 23928 KB Output is correct
75 Correct 573 ms 24028 KB Output is correct
76 Correct 571 ms 24036 KB Output is correct
77 Correct 578 ms 24056 KB Output is correct
78 Correct 587 ms 24184 KB Output is correct
79 Correct 573 ms 24020 KB Output is correct
80 Correct 583 ms 24184 KB Output is correct
81 Correct 578 ms 24056 KB Output is correct
82 Correct 578 ms 24068 KB Output is correct
83 Correct 582 ms 24056 KB Output is correct
84 Correct 577 ms 24056 KB Output is correct
85 Correct 613 ms 24184 KB Output is correct
86 Correct 618 ms 24148 KB Output is correct
87 Correct 578 ms 24056 KB Output is correct
88 Correct 581 ms 24016 KB Output is correct
89 Correct 587 ms 24056 KB Output is correct
90 Correct 583 ms 24024 KB Output is correct
91 Correct 594 ms 24056 KB Output is correct
92 Correct 582 ms 23928 KB Output is correct
93 Correct 587 ms 23928 KB Output is correct
94 Correct 572 ms 24056 KB Output is correct
95 Correct 573 ms 24056 KB Output is correct
96 Correct 619 ms 23928 KB Output is correct
97 Correct 578 ms 23928 KB Output is correct
98 Correct 572 ms 24056 KB Output is correct
99 Correct 575 ms 24016 KB Output is correct
100 Correct 449 ms 23928 KB Output is correct
101 Correct 448 ms 24036 KB Output is correct
102 Correct 438 ms 24036 KB Output is correct
103 Correct 492 ms 24056 KB Output is correct
104 Correct 488 ms 24056 KB Output is correct
105 Correct 470 ms 24056 KB Output is correct
106 Correct 483 ms 23928 KB Output is correct
107 Correct 468 ms 24060 KB Output is correct
108 Correct 481 ms 24152 KB Output is correct
109 Correct 468 ms 23928 KB Output is correct
110 Correct 545 ms 24148 KB Output is correct
111 Correct 572 ms 24068 KB Output is correct
112 Correct 545 ms 23928 KB Output is correct
113 Correct 544 ms 24148 KB Output is correct
114 Correct 553 ms 23928 KB Output is correct
115 Correct 543 ms 24020 KB Output is correct
116 Correct 596 ms 23928 KB Output is correct
117 Correct 553 ms 23928 KB Output is correct
118 Correct 538 ms 23932 KB Output is correct
119 Correct 551 ms 24056 KB Output is correct
120 Correct 1 ms 512 KB Output is correct
121 Correct 1 ms 512 KB Output is correct
122 Correct 601 ms 24056 KB Output is correct
123 Correct 582 ms 24024 KB Output is correct
124 Correct 587 ms 24056 KB Output is correct
125 Correct 582 ms 24184 KB Output is correct
126 Correct 583 ms 24056 KB Output is correct
127 Correct 579 ms 24056 KB Output is correct
128 Correct 578 ms 24184 KB Output is correct
129 Correct 584 ms 24068 KB Output is correct
130 Correct 580 ms 24056 KB Output is correct
131 Correct 583 ms 24056 KB Output is correct
132 Correct 584 ms 24056 KB Output is correct
133 Correct 600 ms 24056 KB Output is correct