oj.uz

Submission #51788

# Submission time Handle Problem Language Result Execution time Memory
51788 2018-06-21T07:56:00 Z ainta Bulldozer (JOI17_bulldozer) C++17
75 / 100
 568 ms 31872 KB 
#include<cstdio>
#include<algorithm>
#define SZ 2048
using namespace std;
struct point2 {
	int x, y, i, j;
	bool operator<(const point2 &p)const {
		return (long long)y*p.x  < (long long)p.y*x;
	}
}P[2010000];
struct point {
	int x, y, c;
	bool operator<(const point &p)const {
		return x != p.x ? x < p.x : y < p.y;
	}
}w[2010];
long long res;
int n,cnt, Loc[2010];
struct Tree {
	long long L[SZ + SZ], R[SZ + SZ], S[SZ + SZ], M[SZ + SZ];
	void Put(int a, int b) {
		a += SZ;
		S[a] = b;
		L[a] = R[a] = M[a] = max(0, b);
		while (a != 1) {
			a >>= 1;
			S[a] = S[a + a] + S[a + a + 1];
			L[a] = max(L[a + a], S[a + a] + L[a + a + 1]);
			R[a] = max(R[a + a + 1], S[a + a + 1] + R[a + a]);
			M[a] = max(max(M[a + a], M[a + a + 1]), R[a + a] + L[a + a + 1]);
		}
	}
}T;
int main() {
	int i, j;
	scanf("%d", &n);
	for (i = 1; i <= n; i++) {
		scanf("%d%d%d", &w[i].x, &w[i].y, &w[i].c);
	}
	sort(w + 1, w + n + 1);
	for (i = 1; i < n; i++) {
		for (j = i + 1; j <= n; j++) {
			int dx = w[j].x - w[i].x, dy = w[j].y - w[i].y;
			if (dx < 0 || (dx == 0 && dy < 0))dx = -dx, dy = -dy;
			P[cnt++] = { dx,dy,i,j };
		}
	}
	for (i = 1; i <= n; i++) {
		Loc[i] = i;
		T.Put(i, w[i].c);
	}
	sort(P, P + cnt);
	res = T.M[1];
	for (i = 0; i < cnt; i++) {
		for (j = i; j < cnt; j++) {
			if ((long long)P[i].x*P[j].y != (long long)P[i].y*P[j].x)break;
			int a = P[j].i, b = P[j].j;
			swap(Loc[a], Loc[b]);
			T.Put(Loc[a], w[a].c);
			T.Put(Loc[b], w[b].c);
		}
		res = max(res, T.M[1]);
		i = j - 1;
	}
	printf("%lld\n", res);
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
bulldozer.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &w[i].x, &w[i].y, &w[i].c);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

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

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 3 ms 512 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 3 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 3 ms 512 KB Output is correct
31 Correct 3 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 542 ms 31800 KB Output is correct
34 Correct 535 ms 31736 KB Output is correct
35 Correct 553 ms 31792 KB Output is correct
36 Correct 522 ms 31864 KB Output is correct
37 Correct 533 ms 31736 KB Output is correct
38 Correct 531 ms 31792 KB Output is correct
39 Correct 534 ms 31796 KB Output is correct
40 Correct 549 ms 31736 KB Output is correct
41 Correct 529 ms 31792 KB Output is correct
42 Correct 545 ms 31872 KB Output is correct
43 Correct 540 ms 31800 KB Output is correct
44 Correct 520 ms 31800 KB Output is correct
45 Correct 518 ms 31796 KB Output is correct
46 Correct 544 ms 31808 KB Output is correct
47 Correct 520 ms 31800 KB Output is correct
48 Correct 535 ms 31796 KB Output is correct
49 Correct 526 ms 31800 KB Output is correct
50 Correct 535 ms 31792 KB Output is correct
51 Correct 526 ms 31800 KB Output is correct
52 Correct 530 ms 31792 KB Output is correct
53 Correct 526 ms 31824 KB Output is correct
54 Correct 560 ms 31796 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 3 ms 512 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 3 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 3 ms 512 KB Output is correct
31 Correct 3 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 542 ms 31800 KB Output is correct
34 Correct 535 ms 31736 KB Output is correct
35 Correct 553 ms 31792 KB Output is correct
36 Correct 522 ms 31864 KB Output is correct
37 Correct 533 ms 31736 KB Output is correct
38 Correct 531 ms 31792 KB Output is correct
39 Correct 534 ms 31796 KB Output is correct
40 Correct 549 ms 31736 KB Output is correct
41 Correct 529 ms 31792 KB Output is correct
42 Correct 545 ms 31872 KB Output is correct
43 Correct 540 ms 31800 KB Output is correct
44 Correct 520 ms 31800 KB Output is correct
45 Correct 518 ms 31796 KB Output is correct
46 Correct 544 ms 31808 KB Output is correct
47 Correct 520 ms 31800 KB Output is correct
48 Correct 535 ms 31796 KB Output is correct
49 Correct 526 ms 31800 KB Output is correct
50 Correct 535 ms 31792 KB Output is correct
51 Correct 526 ms 31800 KB Output is correct
52 Correct 530 ms 31792 KB Output is correct
53 Correct 526 ms 31824 KB Output is correct
54 Correct 560 ms 31796 KB Output is correct
55 Correct 542 ms 31792 KB Output is correct
56 Correct 527 ms 31792 KB Output is correct
57 Correct 539 ms 31792 KB Output is correct
58 Correct 543 ms 31796 KB Output is correct
59 Correct 551 ms 31800 KB Output is correct
60 Correct 558 ms 31792 KB Output is correct
61 Correct 535 ms 31800 KB Output is correct
62 Correct 535 ms 31792 KB Output is correct
63 Correct 528 ms 31796 KB Output is correct
64 Correct 526 ms 31796 KB Output is correct
65 Correct 525 ms 31804 KB Output is correct
66 Correct 528 ms 31796 KB Output is correct
67 Correct 535 ms 31792 KB Output is correct
68 Correct 534 ms 31792 KB Output is correct
69 Correct 531 ms 31800 KB Output is correct
70 Correct 547 ms 31792 KB Output is correct
71 Correct 545 ms 31796 KB Output is correct
72 Correct 564 ms 31800 KB Output is correct
73 Correct 542 ms 31792 KB Output is correct
74 Correct 568 ms 31796 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -