oj.uz

Submission #270497

# Submission time Handle Problem Language Result Execution time Memory
270497 2020-08-17T16:41:45 Z cgiosy Bulldozer (JOI17_bulldozer) C++17
75 / 100
 608 ms 31992 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 {
		ll a=ll(x)*R.y, b=ll(y)*R.x;
		return a<b || a==b && (i<R.i || i==R.i && j<R.j);
	}
};
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};
	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 member function 'bool event::operator<(event) const':
bulldozer.cpp:26:42: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |   return a<b || a==b && (i<R.i || i==R.i && j<R.j);
      |                                   ~~~~~~~^~~~~~~~
bulldozer.cpp:26:22: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |   return a<b || a==b && (i<R.i || i==R.i && j<R.j);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:33:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   33 |  const int M=1<<32-__builtin_clz(N);
      |                 ~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 2 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 2 ms 384 KB Output is correct
11 Correct 1 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 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 0 ms 384 KB Output is correct
20 Correct 1 ms 288 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 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 2 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 2 ms 384 KB Output is correct
11 Correct 1 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 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 0 ms 384 KB Output is correct
20 Correct 1 ms 288 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 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 581 ms 31876 KB Output is correct
34 Correct 579 ms 31880 KB Output is correct
35 Correct 577 ms 31864 KB Output is correct
36 Correct 585 ms 31880 KB Output is correct
37 Correct 576 ms 31864 KB Output is correct
38 Correct 580 ms 31736 KB Output is correct
39 Correct 580 ms 31736 KB Output is correct
40 Correct 586 ms 31864 KB Output is correct
41 Correct 569 ms 31852 KB Output is correct
42 Correct 608 ms 31848 KB Output is correct
43 Correct 577 ms 31968 KB Output is correct
44 Correct 581 ms 31864 KB Output is correct
45 Correct 576 ms 31864 KB Output is correct
46 Correct 572 ms 31844 KB Output is correct
47 Correct 572 ms 31992 KB Output is correct
48 Correct 573 ms 31864 KB Output is correct
49 Correct 566 ms 31864 KB Output is correct
50 Correct 574 ms 31856 KB Output is correct
51 Correct 580 ms 31740 KB Output is correct
52 Correct 595 ms 31736 KB Output is correct
53 Correct 565 ms 31844 KB Output is correct
54 Correct 579 ms 31844 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 2 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 2 ms 384 KB Output is correct
11 Correct 1 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 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 0 ms 384 KB Output is correct
20 Correct 1 ms 288 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 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 2 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 581 ms 31876 KB Output is correct
34 Correct 579 ms 31880 KB Output is correct
35 Correct 577 ms 31864 KB Output is correct
36 Correct 585 ms 31880 KB Output is correct
37 Correct 576 ms 31864 KB Output is correct
38 Correct 580 ms 31736 KB Output is correct
39 Correct 580 ms 31736 KB Output is correct
40 Correct 586 ms 31864 KB Output is correct
41 Correct 569 ms 31852 KB Output is correct
42 Correct 608 ms 31848 KB Output is correct
43 Correct 577 ms 31968 KB Output is correct
44 Correct 581 ms 31864 KB Output is correct
45 Correct 576 ms 31864 KB Output is correct
46 Correct 572 ms 31844 KB Output is correct
47 Correct 572 ms 31992 KB Output is correct
48 Correct 573 ms 31864 KB Output is correct
49 Correct 566 ms 31864 KB Output is correct
50 Correct 574 ms 31856 KB Output is correct
51 Correct 580 ms 31740 KB Output is correct
52 Correct 595 ms 31736 KB Output is correct
53 Correct 565 ms 31844 KB Output is correct
54 Correct 579 ms 31844 KB Output is correct
55 Correct 582 ms 31856 KB Output is correct
56 Correct 574 ms 31864 KB Output is correct
57 Correct 583 ms 31868 KB Output is correct
58 Correct 578 ms 31992 KB Output is correct
59 Correct 570 ms 31736 KB Output is correct
60 Correct 574 ms 31868 KB Output is correct
61 Correct 580 ms 31840 KB Output is correct
62 Correct 598 ms 31992 KB Output is correct
63 Correct 588 ms 31864 KB Output is correct
64 Correct 577 ms 31872 KB Output is correct
65 Correct 583 ms 31864 KB Output is correct
66 Correct 588 ms 31864 KB Output is correct
67 Correct 572 ms 31876 KB Output is correct
68 Correct 585 ms 31992 KB Output is correct
69 Correct 580 ms 31864 KB Output is correct
70 Correct 578 ms 31864 KB Output is correct
71 Correct 582 ms 31864 KB Output is correct
72 Correct 581 ms 31864 KB Output is correct
73 Correct 589 ms 31864 KB Output is correct
74 Correct 573 ms 31864 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -