Submission #108482

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
108482	2019-04-30T05:13:52 Z	E869120	Bulldozer (JOI17_bulldozer)	C++14	20 / 100	34 ms	640 KB

bulldozer

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

struct Fraction {
public:
	long long cx, cy;
};

long long gcd(long long a, long long b) {
	if (b == 0) return a;
	return gcd(b, a%b);
}

Fraction teisei(Fraction A) {
	long long E = gcd(A.cx, A.cy);
	A.cx /= E; A.cy /= E;
	return A;
}

long long N, X[109], Y[109], W[109], ans;
vector<Fraction>E;

int main() {
	cin >> N;
	for (int i = 0; i < N; i++) cin >> X[i] >> Y[i] >> W[i];
	for (int i = 0; i < N; i++) {
		for (int j = i + 1; j < N; j++) E.push_back(teisei(Fraction{ X[j] - X[i],Y[j] - Y[i] }));
	}
	E.push_back(Fraction{ 0, 1 });
	for (Fraction R : E) {
		vector<pair<long long, int>>vec;
		for (int i = 0; i < N; i++) vec.push_back(make_pair(X[i] * -R.cy + Y[i] * R.cx, i));
		sort(vec.begin(), vec.end());

		long long sum = 0, minx = 0;
		for (int i = 0; i < vec.size(); i++) {
			sum += W[vec[i].second]; minx = min(minx, sum);
			ans = max(ans, sum - minx);
		}
	}
	cout << ans << endl;
	return 0;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < vec.size(); i++) {
                   ~~^~~~~~~~~~~~

Subtask #1

0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	580 KB	Output is correct
2	Correct	13 ms	512 KB	Output is correct
3	Correct	13 ms	572 KB	Output is correct
4	Correct	14 ms	512 KB	Output is correct
5	Incorrect	14 ms	640 KB	Output isn't correct
6	Halted	0 ms	0 KB	-

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	580 KB	Output is correct
2	Correct	26 ms	512 KB	Output is correct
3	Correct	26 ms	512 KB	Output is correct
4	Correct	26 ms	572 KB	Output is correct
5	Correct	26 ms	572 KB	Output is correct
6	Correct	26 ms	576 KB	Output is correct
7	Correct	34 ms	576 KB	Output is correct
8	Correct	26 ms	512 KB	Output is correct
9	Correct	26 ms	512 KB	Output is correct
10	Correct	26 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	3 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	256 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	24 ms	512 KB	Output is correct
22	Correct	23 ms	512 KB	Output is correct
23	Correct	24 ms	512 KB	Output is correct
24	Correct	24 ms	512 KB	Output is correct
25	Correct	24 ms	604 KB	Output is correct
26	Correct	23 ms	588 KB	Output is correct
27	Correct	24 ms	484 KB	Output is correct
28	Correct	24 ms	512 KB	Output is correct
29	Correct	26 ms	512 KB	Output is correct
30	Correct	25 ms	580 KB	Output is correct
31	Correct	24 ms	484 KB	Output is correct
32	Correct	24 ms	576 KB	Output is correct

Subtask #3

0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	580 KB	Output is correct
2	Correct	26 ms	512 KB	Output is correct
3	Correct	26 ms	512 KB	Output is correct
4	Correct	26 ms	572 KB	Output is correct
5	Correct	26 ms	572 KB	Output is correct
6	Correct	26 ms	576 KB	Output is correct
7	Correct	34 ms	576 KB	Output is correct
8	Correct	26 ms	512 KB	Output is correct
9	Correct	26 ms	512 KB	Output is correct
10	Correct	26 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	3 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	256 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	24 ms	512 KB	Output is correct
22	Correct	23 ms	512 KB	Output is correct
23	Correct	24 ms	512 KB	Output is correct
24	Correct	24 ms	512 KB	Output is correct
25	Correct	24 ms	604 KB	Output is correct
26	Correct	23 ms	588 KB	Output is correct
27	Correct	24 ms	484 KB	Output is correct
28	Correct	24 ms	512 KB	Output is correct
29	Correct	26 ms	512 KB	Output is correct
30	Correct	25 ms	580 KB	Output is correct
31	Correct	24 ms	484 KB	Output is correct
32	Correct	24 ms	576 KB	Output is correct
33	Incorrect	2 ms	384 KB	Output isn't correct
34	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	580 KB	Output is correct
2	Correct	26 ms	512 KB	Output is correct
3	Correct	26 ms	512 KB	Output is correct
4	Correct	26 ms	572 KB	Output is correct
5	Correct	26 ms	572 KB	Output is correct
6	Correct	26 ms	576 KB	Output is correct
7	Correct	34 ms	576 KB	Output is correct
8	Correct	26 ms	512 KB	Output is correct
9	Correct	26 ms	512 KB	Output is correct
10	Correct	26 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	3 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	256 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	24 ms	512 KB	Output is correct
22	Correct	23 ms	512 KB	Output is correct
23	Correct	24 ms	512 KB	Output is correct
24	Correct	24 ms	512 KB	Output is correct
25	Correct	24 ms	604 KB	Output is correct
26	Correct	23 ms	588 KB	Output is correct
27	Correct	24 ms	484 KB	Output is correct
28	Correct	24 ms	512 KB	Output is correct
29	Correct	26 ms	512 KB	Output is correct
30	Correct	25 ms	580 KB	Output is correct
31	Correct	24 ms	484 KB	Output is correct
32	Correct	24 ms	576 KB	Output is correct
33	Incorrect	2 ms	384 KB	Output isn't correct
34	Halted	0 ms	0 KB	-

Subtask #5

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	580 KB	Output is correct
2	Correct	13 ms	512 KB	Output is correct
3	Correct	13 ms	572 KB	Output is correct
4	Correct	14 ms	512 KB	Output is correct
5	Incorrect	14 ms	640 KB	Output isn't correct
6	Halted	0 ms	0 KB	-