oj.uz

Submission #1018669

# Submission time Handle Problem Language Result Execution time Memory
1018669 2024-07-10T08:08:24 Z vjudge1 Autobus (COCI22_autobus) C++17
70 / 70
 206 ms 8532 KB 
#include <bits/stdc++.h>
#define fast cin.tie(0)->sync_with_stdio(0);
#define inf ((int)1e9)
using namespace std;
const int N = 71;
vector <pair<int, int> > adj[N];
vector <vector<vector<int> > > ans(N);

void dijkstra(int st, int K) { 
	// cout << st << ":\n";
	vector <vector<int> > dist(N, vector<int>(N, inf));
	vector <vector<bool> > vis(N, vector<bool>(N));
	dist[st][0] = 0;
	priority_queue <array<int, 3>, vector<array<int,3> >, greater<array<int, 3>> > pq; // {k, -v, node}
	pq.push({0, 0, st});
	while(!pq.empty()) {
		auto [k, v, node] = pq.top();
		pq.pop();
		if(k > K or vis[node][k]) continue;
		// cout << node << " " << dist[node][k] << "\n";
		vis[node][k] = 1;
		for(auto [to, w]:adj[node]) {
			if(dist[to][k + 1] > v + w) {
				pq.push({k + 1, v + w, to});
				dist[to][k + 1] = v + w;
			}
		}
	}
	ans[st] = dist;
};

int32_t main(){
	fast
	int n, m;
	cin >> n >> m;
	vector <vector<int> > temp(n+1, vector<int>(n + 1, inf));
	for(int i = 0; i < m; i++) {
		int a, b, w;
		cin >> a >> b >> w;
		temp[a][b] = min(temp[a][b], w);
	}
	for(int i = 1; i <= n; i++) {
		for(int j = 1; j <= n; j++) {
			if(i == j) temp[i][j] = 0;
			if(temp[i][j] == inf) continue;
			adj[i].push_back({j, temp[i][j]});
		}
	}
	int K, Q;
	cin >> K >> Q;
	K = min(K, n - 1);
	for(int i = 1; i <= n; i++) {
		dijkstra(i, K);
	}
	while(Q--) {
		int a, b;
		cin >> a >> b;
		cout << (ans[a][b][K] == inf ? -1 : ans[a][b][K]) << "\n";
	} 
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2140 KB Output is correct
2 Correct 3 ms 2140 KB Output is correct
3 Correct 4 ms 1996 KB Output is correct
4 Correct 4 ms 2140 KB Output is correct
5 Correct 6 ms 2140 KB Output is correct
6 Correct 7 ms 2140 KB Output is correct
7 Correct 8 ms 2140 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 17 ms 2140 KB Output is correct
8 Correct 42 ms 2108 KB Output is correct
9 Correct 6 ms 2140 KB Output is correct
10 Correct 36 ms 2056 KB Output is correct
11 Correct 22 ms 2140 KB Output is correct
12 Correct 77 ms 2220 KB Output is correct
13 Correct 71 ms 8252 KB Output is correct
14 Correct 94 ms 8128 KB Output is correct
15 Correct 166 ms 8260 KB Output is correct
16 Correct 102 ms 8276 KB Output is correct
17 Correct 80 ms 8380 KB Output is correct
18 Correct 67 ms 8400 KB Output is correct
19 Correct 164 ms 8384 KB Output is correct
20 Correct 121 ms 8272 KB Output is correct
21 Correct 71 ms 8528 KB Output is correct
22 Correct 79 ms 8400 KB Output is correct
23 Correct 78 ms 8280 KB Output is correct
24 Correct 107 ms 8272 KB Output is correct
25 Correct 70 ms 8532 KB Output is correct
26 Correct 93 ms 8404 KB Output is correct
27 Correct 104 ms 8532 KB Output is correct
28 Correct 97 ms 8400 KB Output is correct
29 Correct 72 ms 8272 KB Output is correct
30 Correct 95 ms 8272 KB Output is correct
31 Correct 136 ms 8272 KB Output is correct
32 Correct 202 ms 8132 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 3 ms 2140 KB Output is correct
8 Correct 3 ms 2140 KB Output is correct
9 Correct 4 ms 1996 KB Output is correct
10 Correct 4 ms 2140 KB Output is correct
11 Correct 6 ms 2140 KB Output is correct
12 Correct 7 ms 2140 KB Output is correct
13 Correct 8 ms 2140 KB Output is correct
14 Correct 17 ms 2140 KB Output is correct
15 Correct 42 ms 2108 KB Output is correct
16 Correct 6 ms 2140 KB Output is correct
17 Correct 36 ms 2056 KB Output is correct
18 Correct 22 ms 2140 KB Output is correct
19 Correct 77 ms 2220 KB Output is correct
20 Correct 71 ms 8252 KB Output is correct
21 Correct 94 ms 8128 KB Output is correct
22 Correct 166 ms 8260 KB Output is correct
23 Correct 102 ms 8276 KB Output is correct
24 Correct 80 ms 8380 KB Output is correct
25 Correct 67 ms 8400 KB Output is correct
26 Correct 164 ms 8384 KB Output is correct
27 Correct 121 ms 8272 KB Output is correct
28 Correct 71 ms 8528 KB Output is correct
29 Correct 79 ms 8400 KB Output is correct
30 Correct 78 ms 8280 KB Output is correct
31 Correct 107 ms 8272 KB Output is correct
32 Correct 70 ms 8532 KB Output is correct
33 Correct 93 ms 8404 KB Output is correct
34 Correct 104 ms 8532 KB Output is correct
35 Correct 97 ms 8400 KB Output is correct
36 Correct 72 ms 8272 KB Output is correct
37 Correct 95 ms 8272 KB Output is correct
38 Correct 136 ms 8272 KB Output is correct
39 Correct 202 ms 8132 KB Output is correct
40 Correct 13 ms 2136 KB Output is correct
41 Correct 42 ms 2132 KB Output is correct
42 Correct 10 ms 2140 KB Output is correct
43 Correct 67 ms 2132 KB Output is correct
44 Correct 20 ms 2132 KB Output is correct
45 Correct 115 ms 2132 KB Output is correct
46 Correct 72 ms 8280 KB Output is correct
47 Correct 128 ms 8136 KB Output is correct
48 Correct 91 ms 8272 KB Output is correct
49 Correct 188 ms 8256 KB Output is correct
50 Correct 70 ms 8264 KB Output is correct
51 Correct 94 ms 8528 KB Output is correct
52 Correct 80 ms 8276 KB Output is correct
53 Correct 164 ms 8356 KB Output is correct
54 Correct 67 ms 8400 KB Output is correct
55 Correct 74 ms 8272 KB Output is correct
56 Correct 152 ms 8276 KB Output is correct
57 Correct 146 ms 8276 KB Output is correct
58 Correct 68 ms 8532 KB Output is correct
59 Correct 113 ms 8528 KB Output is correct
60 Correct 195 ms 8524 KB Output is correct
61 Correct 180 ms 8532 KB Output is correct
62 Correct 67 ms 8260 KB Output is correct
63 Correct 98 ms 8260 KB Output is correct
64 Correct 108 ms 8276 KB Output is correct
65 Correct 206 ms 8276 KB Output is correct