oj.uz

Submission #1008752

# Submission time Handle Problem Language Result Execution time Memory
1008752 2024-06-26T17:35:56 Z overwatch9 Swapping Cities (APIO20_swap) C++17
37 / 100
 2000 ms 19964 KB 
#include "swap.h"

#include <bits/stdc++.h>
using namespace std;

vector <vector <pair <int, int>>> adj;
vector <array <int, 3>> edges;
int n, m;
bool comp(array <int, 3> a, array <int, 3> b) {
	return a[2] < b[2];
}
void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
	// ios_base::sync_with_stdio(false);
	// cin.tie(0);
	// cout.tie(0);
    adj.resize(N+1);
	n = N;
	m = M;
    for (int i = 0; i < M; i++) {
        adj[U[i]].push_back({V[i], W[i]});
		adj[V[i]].push_back({U[i], W[i]});
		edges.push_back({U[i], V[i], W[i]});
	}
	sort(edges.begin(), edges.end(), comp);
}
struct DSU {
	vector <int> link, sz;
	vector <bool> cycle, connected;
	DSU (int s) {
		link = sz = vector <int> (s+1);
		connected = cycle = vector <bool> (s+1);
		for (int i = 1; i <= s; i++) {
			link[i] = i;
			sz[i] = 1;
		}
	}
	int head(int x) {
		if (link[x] != x)
			return link[x] = head(link[x]);
		return x;
	}
	bool same(int a, int b) {
		return head(a) == head(b);
	}
	void unite(int a, int b) {
		a = head(a);
		b = head(b);
		if (sz[a] < sz[b])
			swap(a, b);
		sz[a] += sz[b];
		link[b] = a;
		if (cycle[b])
			cycle[a] = true;
		if (connected[b])
			connected[a] = true;
		// cycle[a] |= cycle[b];
	}
};
int getMinimumFuelCapacity(int x, int y) {
	DSU dsu(n+1);
	vector <int> connected(n);
	for (int i = 0; i < m; i++) {
		int a = edges[i][0], b = edges[i][1];
		if (!dsu.same(a, b)) {
			dsu.unite(a, b);
			connected[a]++;
			connected[b]++;
		}
		else {
			dsu.cycle[dsu.head(a)] = true;
			connected[a]++;
			connected[b]++;
			if (dsu.same(a, x)) {
				if (dsu.same(x, y)) {
					return edges[i][2];
				}
			}
		}
		if (connected[a] >= 3)
			dsu.connected[dsu.head(a)] = true;
		if (connected[b] >= 3)
			dsu.connected[dsu.head(b)] = true;
		if (dsu.same(x, y) && dsu.cycle[dsu.head(a)] && dsu.same(x, a))
			return edges[i][2];
		if (dsu.same(x, y)) {
			if (dsu.same(x, a) && dsu.connected[dsu.head(x)])
				return edges[i][2];
		}
	}
	return -1;
}
// int main() {
// 	int N, M;
// 	cin >> N >> M;
// 	vector <int> u(M), v(M), w(M);
// 	for (int i = 0; i < M; i++)
// 		cin >> u[i] >> v[i] >> w[i];
// 	init(N, M, u, v, w);
// 	int q;
// 	cin >> q;
// 	while (q--) {
// 		int x, y;
// 		cin >> x >> y;
// 		cout << getMinimumFuelCapacity(x, y) << '\n';
// 	}
// }

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 37 ms 9492 KB Output is correct
10 Correct 54 ms 11104 KB Output is correct
11 Correct 52 ms 11028 KB Output is correct
12 Correct 57 ms 11528 KB Output is correct
13 Correct 54 ms 11532 KB Output is correct
14 Execution timed out 2080 ms 10000 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Execution timed out 2035 ms 15692 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 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 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 600 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 37 ms 9492 KB Output is correct
11 Correct 54 ms 11104 KB Output is correct
12 Correct 52 ms 11028 KB Output is correct
13 Correct 57 ms 11528 KB Output is correct
14 Correct 54 ms 11532 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 464 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 1 ms 596 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 6 ms 1884 KB Output is correct
35 Correct 63 ms 11252 KB Output is correct
36 Correct 60 ms 11276 KB Output is correct
37 Correct 55 ms 11276 KB Output is correct
38 Correct 59 ms 11120 KB Output is correct
39 Correct 55 ms 11020 KB Output is correct
40 Correct 52 ms 10252 KB Output is correct
41 Correct 57 ms 11576 KB Output is correct
42 Correct 56 ms 11272 KB Output is correct
43 Correct 46 ms 11284 KB Output is correct
44 Correct 60 ms 12048 KB Output is correct
45 Correct 75 ms 16028 KB Output is correct
46 Correct 55 ms 11224 KB Output is correct
47 Correct 56 ms 11136 KB Output is correct
48 Correct 59 ms 12040 KB Output is correct
49 Correct 49 ms 13724 KB Output is correct
50 Correct 40 ms 10500 KB Output is correct
51 Correct 70 ms 13260 KB Output is correct
52 Correct 86 ms 17412 KB Output is correct
53 Correct 90 ms 18524 KB Output is correct
54 Correct 105 ms 19964 KB Output is correct
55 Correct 48 ms 11228 KB Output is correct
56 Correct 137 ms 17924 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 37 ms 9492 KB Output is correct
10 Correct 54 ms 11104 KB Output is correct
11 Correct 52 ms 11028 KB Output is correct
12 Correct 57 ms 11528 KB Output is correct
13 Correct 54 ms 11532 KB Output is correct
14 Execution timed out 2080 ms 10000 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 37 ms 9492 KB Output is correct
11 Correct 54 ms 11104 KB Output is correct
12 Correct 52 ms 11028 KB Output is correct
13 Correct 57 ms 11528 KB Output is correct
14 Correct 54 ms 11532 KB Output is correct
15 Execution timed out 2080 ms 10000 KB Time limit exceeded
16 Halted 0 ms 0 KB -