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Submission #878411

# Submission time Handle Problem Language Result Execution time Memory
878411 2023-11-24T10:20:50 Z SanguineChameleon Closing Time (IOI23_closing) C++17
59 / 100
 1000 ms 35228 KB 
#include "closing.h"
#include <bits/stdc++.h>
using namespace std;

const long long inf = 1e18L + 20;

namespace cardboard {
	vector<pair<int, long long>> boxes;
	long long K;

	bool cmp(pair<int, int> p1, pair<int, int> p2) {
		return boxes[p1.second].second - boxes[p1.first].second > boxes[p2.second].second - boxes[p2.first].second;
	}

	namespace whole {
		struct half {
			set<int> ids;
			set<pair<long long, int>> ones;
			set<pair<long long, int>> twos;
			long long sum = 0;
			int cnt = 0;
			int side;

			half(int _side): side(_side) {};

			void clear() {
				ids.clear();
				ones.clear();
				twos.clear();
				sum = 0;
				cnt = 0;
			}

			void add(int id) {
				if (side == 1) {
					sum += boxes[id].second;
				}
				ids.insert(id);
				if (boxes[id].first == 1) {
					ones.emplace(boxes[id].second, id);
					cnt += 1;
				}
				else {
					twos.emplace(boxes[id].second, id);
					cnt += 2;
				}
			}

			void rem(int id) {
				if (side == 1) {
					sum -= boxes[id].second;
				}
				ids.erase(id);
				if (boxes[id].first == 1) {
					ones.erase({boxes[id].second, id});
					cnt -= 1;
				}
				else {
					twos.erase({boxes[id].second, id});
					cnt -= 2;
				}
			}
		} left_half(1), right_half(2);

		set<int> ids;

		void clear() {
			ids.clear();
			left_half.clear();
			right_half.clear();
		}

		void fix() {
			left_half.clear();
			right_half.clear();
			bool flag = false;
			for (auto id: ids) {
				if (!flag && left_half.sum + boxes[id].second <= K) {
					left_half.add(id);
				}
				else {
					flag = true;
					right_half.add(id);
				}
			}
		}

		void add(int id) {
			ids.insert(id);
			fix();
		}

		void rem(int id) {
			ids.erase(id);
			fix();
		}

		int get() {
			int res = left_half.cnt;
			if (!right_half.ones.empty() && left_half.sum + right_half.ones.begin()->first <= K) {
				res++;
			}
			else if (!left_half.ones.empty() && !right_half.twos.empty() && left_half.sum - left_half.ones.rbegin()->first + right_half.twos.begin()->first <= K) {
				res++;
			}
			return res;
		}
	}

	int solve(int N, long long _K, vector<pair<long long, long long>> costs) {
		K = _K;
		vector<pair<long long, int>> order(N << 1);
		for (int i = 0; i < N; i++) {
			order[i << 1] = {costs[i].first << 1, i << 1};
			order[i << 1 | 1] = {costs[i].second, i << 1 | 1};
		}
		sort(order.begin(), order.end());
		vector<pair<int, int>> ids(N);
		boxes.resize(N << 1);
		for (int i = 0; i < (N << 1); i++) {
			if (order[i].second & 1) {
				boxes[i] = {2, order[i].first};
				ids[order[i].second >> 1].second = i;
			}
			else {
				boxes[i] = {1, order[i].first >> 1};
				ids[order[i].second >> 1].first = i;
			}
		}
		sort(ids.begin(), ids.end(), cmp);
		whole::clear();
		for (int i = 0; i < N; i++) {
			whole::add(ids[i].second);
		}
		int res = whole::get();
		for (int i = 0; i < N; i++) {
			whole::add(ids[i].first);
			whole::rem(ids[i].second);
			res = max(res, whole::get());
		}
		return res;
	}
}

namespace tree {
	vector<vector<pair<int, int>>> adj;

	void init(int N) {
		adj.resize(N);
		for (int i = 0; i < N; i++) {
			adj[i].clear();
		}
	}

	void add_edge(int u, int v, int w) {
		adj[u].emplace_back(v, w);
		adj[v].emplace_back(u, w);
	}

	void dfs(int u, int p, vector<long long> &dist) {
		for (auto [v, w]: adj[u]) {
			if (v != p) {
				dist[v] = dist[u] + w;
				dfs(v, u, dist);
			}
		}
	}
}

int max_score(int N, int X, int Y, long long K, vector<int> U, vector<int> V, vector<int> W) {
	tree::init(N);
	for (int i = 0; i < N - 1; i++) {
		tree::add_edge(U[i], V[i], W[i]);
	}
	vector<long long> distX(N), distY(N);
	tree::dfs(X, -1, distX);
	tree::dfs(Y, -1, distY);
	vector<long long> dists(distX.begin(), distX.end());
	dists.insert(dists.end(), distY.begin(), distY.end());
	sort(dists.begin(), dists.end());
	int res = 0;
	long long sum = 0;
	for (auto d: dists) {
		if (sum + d <= K) {
			sum += d;
			res++;
		}
		else {
			break;
		}
	}
	int cnt = 0;
	vector<pair<long long, long long>> costs(N);
	for (int i = 0; i < N; i++) {
		if (distX[i] + distY[i] == distX[Y]) {
			cnt++;
			K -= min(distX[i], distY[i]);
			costs[i] = {max(distX[i], distY[i]) - min(distX[i], distY[i]), inf};
		}
		else {
			costs[i] = {min(distX[i], distY[i]), max(distX[i], distY[i])};
		}
	}
	if (K >= 0) {
		res = max(res, cnt + cardboard::solve(N, K, costs));
	}
	return res;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 30772 KB Output is correct
2 Correct 125 ms 35228 KB Output is correct
3 Correct 63 ms 2896 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 420 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 420 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 348 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 68 ms 632 KB Output is correct
20 Correct 57 ms 600 KB Output is correct
21 Correct 62 ms 600 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct

Subtask #4
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 420 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 348 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 68 ms 632 KB Output is correct
20 Correct 57 ms 600 KB Output is correct
21 Correct 62 ms 600 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 34 ms 348 KB Output is correct
26 Execution timed out 1063 ms 1620 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 500 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 420 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 348 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 500 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 600 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 600 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 3 ms 464 KB Output is correct
40 Correct 3 ms 348 KB Output is correct
41 Correct 4 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 2 ms 472 KB Output is correct
44 Correct 2 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 3 ms 348 KB Output is correct
47 Correct 3 ms 344 KB Output is correct
48 Correct 2 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 420 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 348 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 68 ms 632 KB Output is correct
21 Correct 57 ms 600 KB Output is correct
22 Correct 62 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 500 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 600 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 1 ms 600 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 3 ms 464 KB Output is correct
47 Correct 3 ms 348 KB Output is correct
48 Correct 4 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 2 ms 472 KB Output is correct
51 Correct 2 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 3 ms 348 KB Output is correct
54 Correct 3 ms 344 KB Output is correct
55 Correct 2 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 4 ms 348 KB Output is correct
59 Correct 11 ms 472 KB Output is correct
60 Correct 12 ms 348 KB Output is correct
61 Correct 17 ms 348 KB Output is correct
62 Correct 16 ms 488 KB Output is correct
63 Correct 93 ms 604 KB Output is correct
64 Correct 64 ms 344 KB Output is correct
65 Correct 58 ms 348 KB Output is correct
66 Correct 63 ms 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 54 ms 620 KB Output is correct
69 Correct 63 ms 600 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 66 ms 604 KB Output is correct
73 Correct 46 ms 344 KB Output is correct
74 Correct 51 ms 348 KB Output is correct
75 Correct 10 ms 348 KB Output is correct

Subtask #8
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 420 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 348 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 68 ms 632 KB Output is correct
21 Correct 57 ms 600 KB Output is correct
22 Correct 62 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 34 ms 348 KB Output is correct
27 Execution timed out 1063 ms 1620 KB Time limit exceeded
28 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 420 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 348 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 68 ms 632 KB Output is correct
21 Correct 57 ms 600 KB Output is correct
22 Correct 62 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 34 ms 348 KB Output is correct
27 Execution timed out 1063 ms 1620 KB Time limit exceeded
28 Halted 0 ms 0 KB -