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Submission #864476

# Submission time Handle Problem Language Result Execution time Memory
864476 2023-10-23T04:10:46 Z TAhmed33 Autobus (COCI22_autobus) C++
70 / 70
 96 ms 1884 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int inf = 1e14;
int n;
vector <vector <int>> iden;
vector <vector <int>> mul (vector <vector <int>> a, vector <vector <int>> b) {
	vector <vector <int>> ret (n + 1, vector <int> (n + 1));
	for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) ret[i][j] = inf;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			for (int k = 1; k <= n; k++) {
				ret[i][j] = min(ret[i][j], a[i][k] + b[k][j]);
			}
		}
	}
	return ret;
}
vector <vector <int>> power (vector <vector <int>> a, int b) {
	if (b == 1) return a;
	auto u = power(a, b >> 1);
	u = mul(u, u);
	if (b & 1) u = mul(u, a);
	return u;
}
signed main () {
    ios::sync_with_stdio(0);
    cin.tie(0);
	cin >> n; int m;
	cin >> m;
	vector <vector <int>> adj(n + 1, vector <int>(n + 1));
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			if (i != j) {
				adj[i][j] = inf;
			}
		}
	}
	while (m--) {
		int a, b, c;
		cin >> a >> b >> c;
		adj[a][b] = min(adj[a][b], c);
	}
	iden = vector <vector <int>> (n + 1, vector <int> (n + 1));
	for (int i = 1; i <= n; i++) iden[i][i] = 1;
	int k, q;
	cin >> k >> q;
	adj = power(adj, k);
	while (q--) {
		int a, b;
		cin >> a >> b;
		cout << (adj[a][b] >= inf ? -1 : adj[a][b]) << '\n';	
	}
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 2 ms 600 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 2 ms 756 KB Output is correct
7 Correct 2 ms 604 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 3 ms 860 KB Output is correct
8 Correct 4 ms 956 KB Output is correct
9 Correct 2 ms 796 KB Output is correct
10 Correct 4 ms 860 KB Output is correct
11 Correct 3 ms 604 KB Output is correct
12 Correct 5 ms 860 KB Output is correct
13 Correct 69 ms 744 KB Output is correct
14 Correct 71 ms 596 KB Output is correct
15 Correct 70 ms 892 KB Output is correct
16 Correct 73 ms 744 KB Output is correct
17 Correct 69 ms 596 KB Output is correct
18 Correct 69 ms 728 KB Output is correct
19 Correct 73 ms 852 KB Output is correct
20 Correct 71 ms 836 KB Output is correct
21 Correct 73 ms 732 KB Output is correct
22 Correct 70 ms 596 KB Output is correct
23 Correct 70 ms 596 KB Output is correct
24 Correct 72 ms 848 KB Output is correct
25 Correct 76 ms 848 KB Output is correct
26 Correct 75 ms 776 KB Output is correct
27 Correct 73 ms 848 KB Output is correct
28 Correct 71 ms 852 KB Output is correct
29 Correct 68 ms 596 KB Output is correct
30 Correct 88 ms 848 KB Output is correct
31 Correct 71 ms 848 KB Output is correct
32 Correct 86 ms 752 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 2 ms 604 KB Output is correct
9 Correct 2 ms 604 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 2 ms 756 KB Output is correct
13 Correct 2 ms 604 KB Output is correct
14 Correct 3 ms 860 KB Output is correct
15 Correct 4 ms 956 KB Output is correct
16 Correct 2 ms 796 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 5 ms 860 KB Output is correct
20 Correct 69 ms 744 KB Output is correct
21 Correct 71 ms 596 KB Output is correct
22 Correct 70 ms 892 KB Output is correct
23 Correct 73 ms 744 KB Output is correct
24 Correct 69 ms 596 KB Output is correct
25 Correct 69 ms 728 KB Output is correct
26 Correct 73 ms 852 KB Output is correct
27 Correct 71 ms 836 KB Output is correct
28 Correct 73 ms 732 KB Output is correct
29 Correct 70 ms 596 KB Output is correct
30 Correct 70 ms 596 KB Output is correct
31 Correct 72 ms 848 KB Output is correct
32 Correct 76 ms 848 KB Output is correct
33 Correct 75 ms 776 KB Output is correct
34 Correct 73 ms 848 KB Output is correct
35 Correct 71 ms 852 KB Output is correct
36 Correct 68 ms 596 KB Output is correct
37 Correct 88 ms 848 KB Output is correct
38 Correct 71 ms 848 KB Output is correct
39 Correct 86 ms 752 KB Output is correct
40 Correct 3 ms 860 KB Output is correct
41 Correct 16 ms 1884 KB Output is correct
42 Correct 2 ms 600 KB Output is correct
43 Correct 14 ms 1624 KB Output is correct
44 Correct 3 ms 604 KB Output is correct
45 Correct 17 ms 1884 KB Output is correct
46 Correct 69 ms 592 KB Output is correct
47 Correct 70 ms 848 KB Output is correct
48 Correct 70 ms 736 KB Output is correct
49 Correct 85 ms 1560 KB Output is correct
50 Correct 77 ms 752 KB Output is correct
51 Correct 70 ms 848 KB Output is correct
52 Correct 78 ms 592 KB Output is correct
53 Correct 85 ms 1776 KB Output is correct
54 Correct 69 ms 748 KB Output is correct
55 Correct 71 ms 748 KB Output is correct
56 Correct 74 ms 884 KB Output is correct
57 Correct 89 ms 1620 KB Output is correct
58 Correct 70 ms 484 KB Output is correct
59 Correct 73 ms 848 KB Output is correct
60 Correct 76 ms 856 KB Output is correct
61 Correct 87 ms 1872 KB Output is correct
62 Correct 68 ms 592 KB Output is correct
63 Correct 71 ms 852 KB Output is correct
64 Correct 71 ms 852 KB Output is correct
65 Correct 96 ms 1768 KB Output is correct