oj.uz

Submission #101229

# Submission time Handle Problem Language Result Execution time Memory
101229 2019-03-17T20:47:37 Z jasony123123 Bulldozer (JOI17_bulldozer) C++11
60 / 100
 903 ms 50116 KB 
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,start,end) for(int i=start;i<(int)(end);i++)
#define FORE(i,start,end) for(int i=start;i<=(int)end;i++)
#define RFORE(i,start,end) for(int i = start; i>=end; i--)
#define all(a) a.begin(), a.end()
#define v vector
#define mp make_pair
typedef long long ll;
typedef pair<int, int > pii;
template<class T> void minn(T &a, T b) { a = min(a, b); }
template<class T> void maxx(T &a, T b) { a = max(a, b); }
void io() {
#ifdef LOCAL_PROJECT 
	freopen("input.in", "r", stdin); freopen("output.out", "w", stdout);
#else 
#endif 
	ios_base::sync_with_stdio(false); cin.tie(NULL);
}
/****************************************************************/
const int MAXN = 2000;
int N, pos[2000];
ll x[2000], y[2000], w[2000];

struct Node {
	ll lsum, rsum, bsum, esum;
	Node() {
		lsum = rsum = bsum = esum = 0LL;
	}
	Node(ll val) {
		lsum = rsum = bsum = max(0LL, val);
		esum = val;
	}
	Node(Node &a, Node &b) {
		lsum = max(a.lsum, a.esum + b.lsum);
		rsum = max(b.rsum, b.esum + a.rsum);
		bsum = max(a.bsum, max(b.bsum, a.rsum + b.lsum));
		esum = a.esum + b.esum;
	}
};
struct Seg {
	int SZ = 1 << 12;
	Node data[1 << 13];

	void set(int x, ll val) {
		data[x + SZ] = Node(val);
	}
	void build() {
		for (int i = SZ - 1; i > 0; i--)
			data[i] = Node(data[i * 2], data[i * 2 + 1]);
	}
	void update(int x, ll val) {
		set(x, val);
		x += SZ;
		x /= 2;
		while (x) {
			data[x] = Node(data[x * 2], data[x * 2 + 1]);
			x /= 2;
		}
	}
	ll query() {
		return data[1].bsum;
	}

	//int data[2000];

	//void set(int x, int val) {
	//	data[x] = val;
	//}
	//void build() {

	//}
	//void update(int x, int val) {
	//	data[x] = val;
	//}
	//ll query() {
	//	//	cout << "Query: ";
	//	//	FOR(i, 0, N) cout << data[i] << " ";
	//	ll best = 0;
	//	FOR(i, 0, N) FOR(j, i, N) {
	//		ll tmp = 0;
	//		FORE(x, i, j) tmp += data[x];
	//		maxx(best, tmp);
	//	}
	//	//	cout << ":: " << best << "\n";
	//	return best;
	//}
} tree;

struct upd {
	ll vx, vy;
	int ia, ib;
	upd(ll _vx, ll _vy, int _a, int _b) : vx(_vx), vy(_vy), ia(_a), ib(_b) {}
};
v<upd> lines;

void perform_swap(int i, int j) {
	//	cout << "Swapping " << i << " " << j << "\n";
	swap(pos[i], pos[j]);
	tree.update(pos[i], w[i]);
	tree.update(pos[j], w[j]);
}

void setup() {
	cin >> N;
	v<int> pnts(N);
	FOR(i, 0, N) {
		cin >> x[i] >> y[i] >> w[i];
		pnts[i] = i;
	}
	sort(all(pnts), [](int &i, int &j) {
		return mp(x[i], y[i]) < mp(x[j], y[j]);
	});
	FOR(i, 0, N) {
		pos[pnts[i]] = i;
		tree.update(i, w[pnts[i]]);
	}
}

int main() {
	io();
	setup();
	FOR(i, 0, N) FOR(j, 0, N) if (x[i] < x[j])
		lines.push_back(upd(x[j] - x[i], y[j] - y[i], i, j));

	sort(all(lines), [](upd &a, upd &b) {
		if (a.vy*b.vx == b.vy*a.vx)
			return mp(x[a.ia], x[a.ib]) < mp(x[b.ia], x[b.ib]);
		return a.vy*b.vx > b.vy*a.vx;
	});

	ll best = tree.query();
	for (int i = 0; i < lines.size(); ) {
		ll curx = lines[i].vx, cury = lines[i].vy;
		while (i < lines.size() && cury*lines[i].vx == curx*lines[i].vy) {
			perform_swap(lines[i].ia, lines[i].ib);
			i++;
		}
		maxx(best, tree.query());
	}
	cout << best << "\n";
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:133:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < lines.size(); ) {
                  ~~^~~~~~~~~~~~~~
bulldozer.cpp:135:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (i < lines.size() && cury*lines[i].vx == curx*lines[i].vy) {
          ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 4 ms 1024 KB Output is correct
6 Correct 5 ms 896 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 5 ms 896 KB Output is correct
9 Correct 5 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 2 ms 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 2 ms 640 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 4 ms 896 KB Output is correct
6 Correct 4 ms 896 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 4 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 2 ms 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 2 ms 640 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 2 ms 640 KB Output is correct
18 Correct 2 ms 640 KB Output is correct
19 Correct 2 ms 640 KB Output is correct
20 Correct 2 ms 640 KB Output is correct
21 Correct 4 ms 896 KB Output is correct
22 Correct 4 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 4 ms 896 KB Output is correct
25 Correct 4 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 896 KB Output is correct
30 Correct 4 ms 896 KB Output is correct
31 Correct 4 ms 896 KB Output is correct
32 Correct 4 ms 896 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 4 ms 896 KB Output is correct
6 Correct 4 ms 896 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 4 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 2 ms 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 2 ms 640 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 2 ms 640 KB Output is correct
18 Correct 2 ms 640 KB Output is correct
19 Correct 2 ms 640 KB Output is correct
20 Correct 2 ms 640 KB Output is correct
21 Correct 4 ms 896 KB Output is correct
22 Correct 4 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 4 ms 896 KB Output is correct
25 Correct 4 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 896 KB Output is correct
30 Correct 4 ms 896 KB Output is correct
31 Correct 4 ms 896 KB Output is correct
32 Correct 4 ms 896 KB Output is correct
33 Correct 852 ms 49996 KB Output is correct
34 Correct 878 ms 49964 KB Output is correct
35 Correct 888 ms 49964 KB Output is correct
36 Correct 856 ms 50092 KB Output is correct
37 Correct 856 ms 49964 KB Output is correct
38 Correct 862 ms 49964 KB Output is correct
39 Correct 858 ms 49964 KB Output is correct
40 Correct 854 ms 50116 KB Output is correct
41 Correct 870 ms 49964 KB Output is correct
42 Correct 857 ms 49964 KB Output is correct
43 Correct 851 ms 50076 KB Output is correct
44 Correct 900 ms 49964 KB Output is correct
45 Correct 864 ms 50092 KB Output is correct
46 Correct 887 ms 50000 KB Output is correct
47 Correct 872 ms 50096 KB Output is correct
48 Correct 903 ms 50084 KB Output is correct
49 Correct 878 ms 49988 KB Output is correct
50 Correct 886 ms 49976 KB Output is correct
51 Correct 868 ms 50072 KB Output is correct
52 Correct 846 ms 49964 KB Output is correct
53 Correct 841 ms 50080 KB Output is correct
54 Correct 842 ms 50048 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 4 ms 896 KB Output is correct
6 Correct 4 ms 896 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 4 ms 896 KB Output is correct
9 Correct 4 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 2 ms 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 2 ms 640 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 2 ms 640 KB Output is correct
18 Correct 2 ms 640 KB Output is correct
19 Correct 2 ms 640 KB Output is correct
20 Correct 2 ms 640 KB Output is correct
21 Correct 4 ms 896 KB Output is correct
22 Correct 4 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 4 ms 896 KB Output is correct
25 Correct 4 ms 896 KB Output is correct
26 Correct 4 ms 896 KB Output is correct
27 Correct 4 ms 896 KB Output is correct
28 Correct 4 ms 896 KB Output is correct
29 Correct 4 ms 896 KB Output is correct
30 Correct 4 ms 896 KB Output is correct
31 Correct 4 ms 896 KB Output is correct
32 Correct 4 ms 896 KB Output is correct
33 Correct 852 ms 49996 KB Output is correct
34 Correct 878 ms 49964 KB Output is correct
35 Correct 888 ms 49964 KB Output is correct
36 Correct 856 ms 50092 KB Output is correct
37 Correct 856 ms 49964 KB Output is correct
38 Correct 862 ms 49964 KB Output is correct
39 Correct 858 ms 49964 KB Output is correct
40 Correct 854 ms 50116 KB Output is correct
41 Correct 870 ms 49964 KB Output is correct
42 Correct 857 ms 49964 KB Output is correct
43 Correct 851 ms 50076 KB Output is correct
44 Correct 900 ms 49964 KB Output is correct
45 Correct 864 ms 50092 KB Output is correct
46 Correct 887 ms 50000 KB Output is correct
47 Correct 872 ms 50096 KB Output is correct
48 Correct 903 ms 50084 KB Output is correct
49 Correct 878 ms 49988 KB Output is correct
50 Correct 886 ms 49976 KB Output is correct
51 Correct 868 ms 50072 KB Output is correct
52 Correct 846 ms 49964 KB Output is correct
53 Correct 841 ms 50080 KB Output is correct
54 Correct 842 ms 50048 KB Output is correct
55 Correct 855 ms 50008 KB Output is correct
56 Correct 848 ms 50040 KB Output is correct
57 Correct 860 ms 50000 KB Output is correct
58 Correct 860 ms 49988 KB Output is correct
59 Correct 847 ms 49964 KB Output is correct
60 Correct 870 ms 50084 KB Output is correct
61 Correct 840 ms 50064 KB Output is correct
62 Correct 867 ms 50064 KB Output is correct
63 Correct 882 ms 49968 KB Output is correct
64 Correct 885 ms 49968 KB Output is correct
65 Incorrect 852 ms 49964 KB Output isn't correct
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 896 KB Output is correct
2 Correct 4 ms 896 KB Output is correct
3 Correct 4 ms 896 KB Output is correct
4 Correct 4 ms 896 KB Output is correct
5 Correct 4 ms 1024 KB Output is correct
6 Correct 5 ms 896 KB Output is correct
7 Correct 4 ms 896 KB Output is correct
8 Correct 5 ms 896 KB Output is correct
9 Correct 5 ms 896 KB Output is correct
10 Correct 4 ms 896 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 2 ms 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 2 ms 640 KB Output is correct
16 Correct 3 ms 896 KB Output is correct
17 Correct 4 ms 896 KB Output is correct
18 Correct 4 ms 896 KB Output is correct
19 Correct 4 ms 896 KB Output is correct
20 Correct 4 ms 896 KB Output is correct
21 Correct 4 ms 896 KB Output is correct
22 Correct 4 ms 896 KB Output is correct
23 Correct 4 ms 896 KB Output is correct
24 Correct 4 ms 896 KB Output is correct
25 Correct 4 ms 896 KB Output is correct
26 Correct 2 ms 640 KB Output is correct
27 Correct 2 ms 640 KB Output is correct
28 Correct 2 ms 640 KB Output is correct
29 Correct 2 ms 640 KB Output is correct
30 Correct 2 ms 640 KB Output is correct
31 Correct 2 ms 640 KB Output is correct
32 Correct 2 ms 640 KB Output is correct
33 Correct 2 ms 640 KB Output is correct
34 Correct 2 ms 640 KB Output is correct
35 Correct 2 ms 640 KB Output is correct
36 Correct 4 ms 896 KB Output is correct
37 Correct 4 ms 896 KB Output is correct
38 Correct 4 ms 896 KB Output is correct
39 Correct 4 ms 896 KB Output is correct
40 Correct 4 ms 896 KB Output is correct
41 Correct 4 ms 896 KB Output is correct
42 Correct 4 ms 896 KB Output is correct
43 Correct 4 ms 896 KB Output is correct
44 Correct 4 ms 896 KB Output is correct
45 Correct 4 ms 896 KB Output is correct
46 Correct 4 ms 896 KB Output is correct
47 Correct 4 ms 896 KB Output is correct
48 Correct 852 ms 49996 KB Output is correct
49 Correct 878 ms 49964 KB Output is correct
50 Correct 888 ms 49964 KB Output is correct
51 Correct 856 ms 50092 KB Output is correct
52 Correct 856 ms 49964 KB Output is correct
53 Correct 862 ms 49964 KB Output is correct
54 Correct 858 ms 49964 KB Output is correct
55 Correct 854 ms 50116 KB Output is correct
56 Correct 870 ms 49964 KB Output is correct
57 Correct 857 ms 49964 KB Output is correct
58 Correct 851 ms 50076 KB Output is correct
59 Correct 900 ms 49964 KB Output is correct
60 Correct 864 ms 50092 KB Output is correct
61 Correct 887 ms 50000 KB Output is correct
62 Correct 872 ms 50096 KB Output is correct
63 Correct 903 ms 50084 KB Output is correct
64 Correct 878 ms 49988 KB Output is correct
65 Correct 886 ms 49976 KB Output is correct
66 Correct 868 ms 50072 KB Output is correct
67 Correct 846 ms 49964 KB Output is correct
68 Correct 841 ms 50080 KB Output is correct
69 Correct 842 ms 50048 KB Output is correct
70 Correct 855 ms 50008 KB Output is correct
71 Correct 848 ms 50040 KB Output is correct
72 Correct 860 ms 50000 KB Output is correct
73 Correct 860 ms 49988 KB Output is correct
74 Correct 847 ms 49964 KB Output is correct
75 Correct 870 ms 50084 KB Output is correct
76 Correct 840 ms 50064 KB Output is correct
77 Correct 867 ms 50064 KB Output is correct
78 Correct 882 ms 49968 KB Output is correct
79 Correct 885 ms 49968 KB Output is correct
80 Incorrect 852 ms 49964 KB Output isn't correct
81 Halted 0 ms 0 KB -