oj.uz

Submission #136170

# Submission time Handle Problem Language Result Execution time Memory
136170 2019-07-24T21:06:26 Z MetB Bulldozer (JOI17_bulldozer) C++14
80 / 100
 819 ms 66352 KB 
#include <algorithm>
#include <iostream>
#include <string.h>
#include <cstdlib>
#include <vector>
#include <string>
#include <bitset>
#include <math.h>
#include <queue>
#include <stack>
#include <set>
#include <map>
 
typedef long long ll;
typedef long double ld;
 
const ll MOD = 1e9 + 7, INF = 1e18 + 1;
 
using namespace std;

ll p[1000000], to[10000], n;

struct SegTree
{
	ll t[80000][4], start;
 
	ll operator[] (const int& i)
	{
		return t[i][0];
	}
 
	void build (ll n)
	{
		start = 1;
 
		while (start < n) start <<= 1;
 
		for (ll i = 2 * start - 1; i; i--)
			merge (i);
	}
 
	void merge (ll node)
	{
		if (node >= start) 
		{
			t[node][3] = p[node - start];
			t[node][2] = max (0LL, p[node - start]);
			t[node][1] = max (0LL, p[node - start]);
			t[node][0] = max (0LL, p[node - start]);
		}
		else
		{
			t[node][3] = t[2 * node][3] + t[2 * node + 1][3];
			t[node][2] = max (t[2 * node][3] + t[2 * node + 1][2], t[2 * node][2]);
			t[node][1] = max (t[2 * node][1] + t[2 * node + 1][3], t[2 * node + 1][1]);
			t[node][0] = max (max (t[2 * node][0], t[2 * node + 1][0]), t[2 * node][1] + t[2 * node + 1][2]);
		}
	}
 
	void update (ll x, ll d)
	{
		p[x] = d;
		x += start;
 
		while (x)
		{
			merge (x);
			x /= 2;
		}
	}
} t;

struct point
{
	ll x, y, c;

	bool operator < (const point& b) const
	{
		return (y == b.y ? x < b.x : y > b.y);
	}

} a[2000];

struct fraction
{
	ll a, b;

	ll p1, p2;

	bool operator < (const fraction& d) const
	{
		if (!d.b && !b) return a < d.a;
		if (!d.b) return true;
		if (!b) return false;
		return (a * d.b) < (b * d.a);
	}

	bool operator == (const fraction& d) const
	{
		if (!b && !d.b) return true;
		if (!b || !d.b) return false;
		return (a * d.b) == (b * d.a);
	}
};

vector <fraction> d;

int main ()
{
	cin >> n;

	for (ll i = 0; i < n; i++)
		scanf ("%lld%lld%lld", &a[i].x, &a[i].y, &a[i].c);

	sort (a, a + n);

	for (ll i = 0; i < n; i++)
		p[i] = a[i].c;

	for (ll i = 0; i < n; i++)
		for (ll j = i + 1; j < n; j++)
		{
			ll A = a[i].y - a[j].y;
			ll B = a[i].x - a[j].x;

			d.push_back ({-B, A, i, j});

			to[i] = i;
			to[j] = j;
		}

	sort (d.begin(), d.end());

	t.build (n);

	ll ans = t[1];

	
	for (ll i = 0; i < d.size (); i++)
	{
		if (d[i].b == 0) break;
		ll l = d[i].p1, r = d[i].p2, p_l = p[to[l]], p_r = p[to[r]];

		if (to[l] > to[r]) continue;
 
		t.update (to[r], p_l);
		t.update (to[l], p_r);
	 
		swap (to[l], to[r]);

		/*for (int i = 0; i < n; i++)
			for (int j = 0; j < n; j++)
				if (to[i] == j)
					cout << "(" << a[j].x << ", " << a[j].y << ") ";
		cout << endl;*/

		ans = max (ans, t[1]);
	}

	cout << ans;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:139:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (ll i = 0; i < d.size (); i++)
                 ~~^~~~~~~~~~~
bulldozer.cpp:113:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%lld%lld%lld", &a[i].x, &a[i].y, &a[i].c);
   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 760 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 3 ms 760 KB Output is correct
8 Correct 3 ms 760 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 4 ms 760 KB Output is correct
4 Correct 3 ms 760 KB Output is correct
5 Correct 4 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 4 ms 760 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 760 KB Output is correct
22 Correct 3 ms 760 KB Output is correct
23 Correct 3 ms 760 KB Output is correct
24 Correct 3 ms 760 KB Output is correct
25 Correct 3 ms 760 KB Output is correct
26 Correct 3 ms 760 KB Output is correct
27 Correct 3 ms 760 KB Output is correct
28 Correct 3 ms 760 KB Output is correct
29 Correct 3 ms 760 KB Output is correct
30 Correct 3 ms 760 KB Output is correct
31 Correct 3 ms 760 KB Output is correct
32 Correct 3 ms 760 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 4 ms 760 KB Output is correct
4 Correct 3 ms 760 KB Output is correct
5 Correct 4 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 4 ms 760 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 760 KB Output is correct
22 Correct 3 ms 760 KB Output is correct
23 Correct 3 ms 760 KB Output is correct
24 Correct 3 ms 760 KB Output is correct
25 Correct 3 ms 760 KB Output is correct
26 Correct 3 ms 760 KB Output is correct
27 Correct 3 ms 760 KB Output is correct
28 Correct 3 ms 760 KB Output is correct
29 Correct 3 ms 760 KB Output is correct
30 Correct 3 ms 760 KB Output is correct
31 Correct 3 ms 760 KB Output is correct
32 Correct 3 ms 760 KB Output is correct
33 Correct 717 ms 66204 KB Output is correct
34 Correct 724 ms 66328 KB Output is correct
35 Correct 731 ms 66300 KB Output is correct
36 Correct 735 ms 66328 KB Output is correct
37 Correct 724 ms 66328 KB Output is correct
38 Correct 819 ms 66288 KB Output is correct
39 Correct 744 ms 66328 KB Output is correct
40 Correct 738 ms 66328 KB Output is correct
41 Correct 716 ms 66328 KB Output is correct
42 Correct 725 ms 66204 KB Output is correct
43 Correct 722 ms 66200 KB Output is correct
44 Correct 748 ms 66328 KB Output is correct
45 Correct 742 ms 66328 KB Output is correct
46 Correct 750 ms 66200 KB Output is correct
47 Correct 727 ms 66328 KB Output is correct
48 Correct 721 ms 66200 KB Output is correct
49 Correct 708 ms 66200 KB Output is correct
50 Correct 721 ms 66328 KB Output is correct
51 Correct 715 ms 66328 KB Output is correct
52 Correct 710 ms 66328 KB Output is correct
53 Correct 702 ms 66200 KB Output is correct
54 Correct 717 ms 66200 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 4 ms 760 KB Output is correct
4 Correct 3 ms 760 KB Output is correct
5 Correct 4 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 4 ms 760 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 760 KB Output is correct
22 Correct 3 ms 760 KB Output is correct
23 Correct 3 ms 760 KB Output is correct
24 Correct 3 ms 760 KB Output is correct
25 Correct 3 ms 760 KB Output is correct
26 Correct 3 ms 760 KB Output is correct
27 Correct 3 ms 760 KB Output is correct
28 Correct 3 ms 760 KB Output is correct
29 Correct 3 ms 760 KB Output is correct
30 Correct 3 ms 760 KB Output is correct
31 Correct 3 ms 760 KB Output is correct
32 Correct 3 ms 760 KB Output is correct
33 Correct 717 ms 66204 KB Output is correct
34 Correct 724 ms 66328 KB Output is correct
35 Correct 731 ms 66300 KB Output is correct
36 Correct 735 ms 66328 KB Output is correct
37 Correct 724 ms 66328 KB Output is correct
38 Correct 819 ms 66288 KB Output is correct
39 Correct 744 ms 66328 KB Output is correct
40 Correct 738 ms 66328 KB Output is correct
41 Correct 716 ms 66328 KB Output is correct
42 Correct 725 ms 66204 KB Output is correct
43 Correct 722 ms 66200 KB Output is correct
44 Correct 748 ms 66328 KB Output is correct
45 Correct 742 ms 66328 KB Output is correct
46 Correct 750 ms 66200 KB Output is correct
47 Correct 727 ms 66328 KB Output is correct
48 Correct 721 ms 66200 KB Output is correct
49 Correct 708 ms 66200 KB Output is correct
50 Correct 721 ms 66328 KB Output is correct
51 Correct 715 ms 66328 KB Output is correct
52 Correct 710 ms 66328 KB Output is correct
53 Correct 702 ms 66200 KB Output is correct
54 Correct 717 ms 66200 KB Output is correct
55 Correct 719 ms 66236 KB Output is correct
56 Correct 727 ms 66200 KB Output is correct
57 Correct 718 ms 66264 KB Output is correct
58 Correct 720 ms 66200 KB Output is correct
59 Correct 747 ms 66312 KB Output is correct
60 Correct 736 ms 66300 KB Output is correct
61 Correct 749 ms 66280 KB Output is correct
62 Correct 774 ms 66328 KB Output is correct
63 Correct 773 ms 66252 KB Output is correct
64 Correct 752 ms 66328 KB Output is correct
65 Correct 724 ms 66200 KB Output is correct
66 Correct 713 ms 66200 KB Output is correct
67 Correct 725 ms 66352 KB Output is correct
68 Correct 729 ms 66328 KB Output is correct
69 Correct 733 ms 66328 KB Output is correct
70 Correct 740 ms 66328 KB Output is correct
71 Correct 727 ms 66328 KB Output is correct
72 Correct 733 ms 66200 KB Output is correct
73 Correct 723 ms 66328 KB Output is correct
74 Correct 721 ms 66204 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 760 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 3 ms 760 KB Output is correct
8 Correct 3 ms 760 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 760 KB Output is correct
17 Correct 3 ms 760 KB Output is correct
18 Correct 4 ms 760 KB Output is correct
19 Correct 3 ms 760 KB Output is correct
20 Correct 4 ms 760 KB Output is correct
21 Correct 3 ms 760 KB Output is correct
22 Correct 4 ms 760 KB Output is correct
23 Correct 3 ms 764 KB Output is correct
24 Correct 3 ms 760 KB Output is correct
25 Correct 3 ms 760 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 380 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 4 ms 760 KB Output is correct
37 Correct 3 ms 760 KB Output is correct
38 Correct 3 ms 760 KB Output is correct
39 Correct 3 ms 760 KB Output is correct
40 Correct 3 ms 760 KB Output is correct
41 Correct 3 ms 760 KB Output is correct
42 Correct 3 ms 760 KB Output is correct
43 Correct 3 ms 760 KB Output is correct
44 Correct 3 ms 760 KB Output is correct
45 Correct 3 ms 760 KB Output is correct
46 Correct 3 ms 760 KB Output is correct
47 Correct 3 ms 760 KB Output is correct
48 Correct 717 ms 66204 KB Output is correct
49 Correct 724 ms 66328 KB Output is correct
50 Correct 731 ms 66300 KB Output is correct
51 Correct 735 ms 66328 KB Output is correct
52 Correct 724 ms 66328 KB Output is correct
53 Correct 819 ms 66288 KB Output is correct
54 Correct 744 ms 66328 KB Output is correct
55 Correct 738 ms 66328 KB Output is correct
56 Correct 716 ms 66328 KB Output is correct
57 Correct 725 ms 66204 KB Output is correct
58 Correct 722 ms 66200 KB Output is correct
59 Correct 748 ms 66328 KB Output is correct
60 Correct 742 ms 66328 KB Output is correct
61 Correct 750 ms 66200 KB Output is correct
62 Correct 727 ms 66328 KB Output is correct
63 Correct 721 ms 66200 KB Output is correct
64 Correct 708 ms 66200 KB Output is correct
65 Correct 721 ms 66328 KB Output is correct
66 Correct 715 ms 66328 KB Output is correct
67 Correct 710 ms 66328 KB Output is correct
68 Correct 702 ms 66200 KB Output is correct
69 Correct 717 ms 66200 KB Output is correct
70 Correct 719 ms 66236 KB Output is correct
71 Correct 727 ms 66200 KB Output is correct
72 Correct 718 ms 66264 KB Output is correct
73 Correct 720 ms 66200 KB Output is correct
74 Correct 747 ms 66312 KB Output is correct
75 Correct 736 ms 66300 KB Output is correct
76 Correct 749 ms 66280 KB Output is correct
77 Correct 774 ms 66328 KB Output is correct
78 Correct 773 ms 66252 KB Output is correct
79 Correct 752 ms 66328 KB Output is correct
80 Correct 724 ms 66200 KB Output is correct
81 Correct 713 ms 66200 KB Output is correct
82 Correct 725 ms 66352 KB Output is correct
83 Correct 729 ms 66328 KB Output is correct
84 Correct 733 ms 66328 KB Output is correct
85 Correct 740 ms 66328 KB Output is correct
86 Correct 727 ms 66328 KB Output is correct
87 Correct 733 ms 66200 KB Output is correct
88 Correct 723 ms 66328 KB Output is correct
89 Correct 721 ms 66204 KB Output is correct
90 Correct 799 ms 66312 KB Output is correct
91 Correct 741 ms 66328 KB Output is correct
92 Correct 728 ms 66220 KB Output is correct
93 Correct 730 ms 66312 KB Output is correct
94 Correct 754 ms 66200 KB Output is correct
95 Correct 724 ms 66328 KB Output is correct
96 Correct 739 ms 66328 KB Output is correct
97 Correct 739 ms 66200 KB Output is correct
98 Correct 712 ms 66240 KB Output is correct
99 Correct 726 ms 66328 KB Output is correct
100 Incorrect 453 ms 66200 KB Output isn't correct
101 Halted 0 ms 0 KB -