oj.uz

Submission #864475

# Submission time Handle Problem Language Result Execution time Memory
864475 2023-10-23T04:09:32 Z TAhmed33 Autobus (COCI22_autobus) C++
70 / 70
 263 ms 8264 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 () {
	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 1 ms 344 KB Output is correct
3 Correct 0 ms 500 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 604 KB Output is correct
2 Correct 8 ms 604 KB Output is correct
3 Correct 8 ms 708 KB Output is correct
4 Correct 9 ms 604 KB Output is correct
5 Correct 9 ms 604 KB Output is correct
6 Correct 10 ms 604 KB Output is correct
7 Correct 10 ms 812 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 1 ms 344 KB Output is correct
3 Correct 0 ms 500 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 12 ms 1112 KB Output is correct
8 Correct 11 ms 880 KB Output is correct
9 Correct 8 ms 600 KB Output is correct
10 Correct 10 ms 860 KB Output is correct
11 Correct 11 ms 812 KB Output is correct
12 Correct 12 ms 928 KB Output is correct
13 Correct 242 ms 6896 KB Output is correct
14 Correct 263 ms 6848 KB Output is correct
15 Correct 245 ms 6968 KB Output is correct
16 Correct 232 ms 6740 KB Output is correct
17 Correct 232 ms 6740 KB Output is correct
18 Correct 232 ms 6740 KB Output is correct
19 Correct 243 ms 7224 KB Output is correct
20 Correct 237 ms 6992 KB Output is correct
21 Correct 253 ms 6976 KB Output is correct
22 Correct 246 ms 6980 KB Output is correct
23 Correct 245 ms 7228 KB Output is correct
24 Correct 249 ms 7096 KB Output is correct
25 Correct 240 ms 6996 KB Output is correct
26 Correct 240 ms 7100 KB Output is correct
27 Correct 245 ms 7236 KB Output is correct
28 Correct 244 ms 6992 KB Output is correct
29 Correct 232 ms 6992 KB Output is correct
30 Correct 239 ms 6980 KB Output is correct
31 Correct 252 ms 6848 KB Output is correct
32 Correct 232 ms 6848 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 1 ms 344 KB Output is correct
3 Correct 0 ms 500 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 8 ms 604 KB Output is correct
8 Correct 8 ms 604 KB Output is correct
9 Correct 8 ms 708 KB Output is correct
10 Correct 9 ms 604 KB Output is correct
11 Correct 9 ms 604 KB Output is correct
12 Correct 10 ms 604 KB Output is correct
13 Correct 10 ms 812 KB Output is correct
14 Correct 12 ms 1112 KB Output is correct
15 Correct 11 ms 880 KB Output is correct
16 Correct 8 ms 600 KB Output is correct
17 Correct 10 ms 860 KB Output is correct
18 Correct 11 ms 812 KB Output is correct
19 Correct 12 ms 928 KB Output is correct
20 Correct 242 ms 6896 KB Output is correct
21 Correct 263 ms 6848 KB Output is correct
22 Correct 245 ms 6968 KB Output is correct
23 Correct 232 ms 6740 KB Output is correct
24 Correct 232 ms 6740 KB Output is correct
25 Correct 232 ms 6740 KB Output is correct
26 Correct 243 ms 7224 KB Output is correct
27 Correct 237 ms 6992 KB Output is correct
28 Correct 253 ms 6976 KB Output is correct
29 Correct 246 ms 6980 KB Output is correct
30 Correct 245 ms 7228 KB Output is correct
31 Correct 249 ms 7096 KB Output is correct
32 Correct 240 ms 6996 KB Output is correct
33 Correct 240 ms 7100 KB Output is correct
34 Correct 245 ms 7236 KB Output is correct
35 Correct 244 ms 6992 KB Output is correct
36 Correct 232 ms 6992 KB Output is correct
37 Correct 239 ms 6980 KB Output is correct
38 Correct 252 ms 6848 KB Output is correct
39 Correct 232 ms 6848 KB Output is correct
40 Correct 9 ms 860 KB Output is correct
41 Correct 25 ms 1884 KB Output is correct
42 Correct 9 ms 604 KB Output is correct
43 Correct 22 ms 1628 KB Output is correct
44 Correct 12 ms 860 KB Output is correct
45 Correct 25 ms 1884 KB Output is correct
46 Correct 233 ms 6740 KB Output is correct
47 Correct 230 ms 6996 KB Output is correct
48 Correct 234 ms 6740 KB Output is correct
49 Correct 252 ms 7904 KB Output is correct
50 Correct 233 ms 6976 KB Output is correct
51 Correct 237 ms 6976 KB Output is correct
52 Correct 240 ms 6840 KB Output is correct
53 Correct 262 ms 8016 KB Output is correct
54 Correct 235 ms 6740 KB Output is correct
55 Correct 238 ms 6852 KB Output is correct
56 Correct 238 ms 7116 KB Output is correct
57 Correct 254 ms 8264 KB Output is correct
58 Correct 255 ms 6992 KB Output is correct
59 Correct 242 ms 6992 KB Output is correct
60 Correct 260 ms 7224 KB Output is correct
61 Correct 254 ms 8116 KB Output is correct
62 Correct 257 ms 6996 KB Output is correct
63 Correct 230 ms 6736 KB Output is correct
64 Correct 231 ms 6716 KB Output is correct
65 Correct 250 ms 8024 KB Output is correct