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Submission #696629

# Submission time Handle Problem Language Result Execution time Memory
696629 2023-02-07T01:58:25 Z TranGiaHuy1508 Autobus (COCI22_autobus) C++17
70 / 70
 151 ms 596 KB 
#include <bits/stdc++.h>
using namespace std;

void main_program();

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	main_program();
}

#define int long long
const int inf = 1e18;

struct Matrix{
	vector<vector<int>> v;
	int r, c;

	Matrix() = default;
	Matrix(int R): Matrix(R, R) {
		for (int i = 0; i < R; i++) v[i][i] = 0;
	}
	Matrix(int R, int C): r(R), c(C) {
		v.assign(R, vector<int>(C, inf));
	}

	Matrix operator * (const Matrix &M){
		Matrix res(r, M.c);
		for (int i = 0; i < r; i++){
			for (int k = 0; k < c; k++){
				for (int j = 0; j < M.c; j++){
					res.v[i][j] = min(res.v[i][j], v[i][k] + M.v[k][j]);
				}
			}
		}
		return res;
	}

	Matrix operator ^ (int a){
		Matrix res(r);
		for (Matrix exp = *this; a; a >>= 1, exp = exp * exp){
			if (a & 1) res = res * exp;
		}
		return res;
	}
};

void main_program(){
	int n, m; cin >> n >> m;
	
	Matrix mult(n);

	for (int i = 0; i < m; i++){
		int a, b, w; cin >> a >> b >> w;
		a--; b--;
		mult.v[a][b] = min(mult.v[a][b], w);
	}

	int k, q; cin >> k >> q;
	mult = mult ^ k;

	for (int qr = 0; qr < q; qr++){
		int c, d; cin >> c >> d;
		c--; d--;
		Matrix base(1, n); base.v[0][c] = 0;
		Matrix res = base * mult;

		if (res.v[0][d] == inf) cout << "-1\n";
		else cout << res.v[0][d] << "\n";
	}
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 224 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 492 KB Output is correct
2 Correct 29 ms 492 KB Output is correct
3 Correct 29 ms 496 KB Output is correct
4 Correct 36 ms 468 KB Output is correct
5 Correct 29 ms 492 KB Output is correct
6 Correct 30 ms 484 KB Output is correct
7 Correct 30 ms 488 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 224 KB Output is correct
7 Correct 32 ms 468 KB Output is correct
8 Correct 34 ms 512 KB Output is correct
9 Correct 32 ms 484 KB Output is correct
10 Correct 32 ms 468 KB Output is correct
11 Correct 30 ms 488 KB Output is correct
12 Correct 32 ms 480 KB Output is correct
13 Correct 114 ms 464 KB Output is correct
14 Correct 109 ms 352 KB Output is correct
15 Correct 116 ms 460 KB Output is correct
16 Correct 109 ms 356 KB Output is correct
17 Correct 110 ms 468 KB Output is correct
18 Correct 108 ms 480 KB Output is correct
19 Correct 118 ms 592 KB Output is correct
20 Correct 116 ms 472 KB Output is correct
21 Correct 112 ms 468 KB Output is correct
22 Correct 113 ms 480 KB Output is correct
23 Correct 116 ms 460 KB Output is correct
24 Correct 112 ms 468 KB Output is correct
25 Correct 122 ms 464 KB Output is correct
26 Correct 114 ms 484 KB Output is correct
27 Correct 116 ms 464 KB Output is correct
28 Correct 112 ms 472 KB Output is correct
29 Correct 118 ms 464 KB Output is correct
30 Correct 151 ms 460 KB Output is correct
31 Correct 135 ms 468 KB Output is correct
32 Correct 110 ms 468 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 224 KB Output is correct
7 Correct 28 ms 492 KB Output is correct
8 Correct 29 ms 492 KB Output is correct
9 Correct 29 ms 496 KB Output is correct
10 Correct 36 ms 468 KB Output is correct
11 Correct 29 ms 492 KB Output is correct
12 Correct 30 ms 484 KB Output is correct
13 Correct 30 ms 488 KB Output is correct
14 Correct 32 ms 468 KB Output is correct
15 Correct 34 ms 512 KB Output is correct
16 Correct 32 ms 484 KB Output is correct
17 Correct 32 ms 468 KB Output is correct
18 Correct 30 ms 488 KB Output is correct
19 Correct 32 ms 480 KB Output is correct
20 Correct 114 ms 464 KB Output is correct
21 Correct 109 ms 352 KB Output is correct
22 Correct 116 ms 460 KB Output is correct
23 Correct 109 ms 356 KB Output is correct
24 Correct 110 ms 468 KB Output is correct
25 Correct 108 ms 480 KB Output is correct
26 Correct 118 ms 592 KB Output is correct
27 Correct 116 ms 472 KB Output is correct
28 Correct 112 ms 468 KB Output is correct
29 Correct 113 ms 480 KB Output is correct
30 Correct 116 ms 460 KB Output is correct
31 Correct 112 ms 468 KB Output is correct
32 Correct 122 ms 464 KB Output is correct
33 Correct 114 ms 484 KB Output is correct
34 Correct 116 ms 464 KB Output is correct
35 Correct 112 ms 472 KB Output is correct
36 Correct 118 ms 464 KB Output is correct
37 Correct 151 ms 460 KB Output is correct
38 Correct 135 ms 468 KB Output is correct
39 Correct 110 ms 468 KB Output is correct
40 Correct 29 ms 520 KB Output is correct
41 Correct 42 ms 596 KB Output is correct
42 Correct 30 ms 480 KB Output is correct
43 Correct 45 ms 484 KB Output is correct
44 Correct 30 ms 488 KB Output is correct
45 Correct 47 ms 476 KB Output is correct
46 Correct 109 ms 472 KB Output is correct
47 Correct 109 ms 464 KB Output is correct
48 Correct 112 ms 468 KB Output is correct
49 Correct 123 ms 476 KB Output is correct
50 Correct 114 ms 480 KB Output is correct
51 Correct 114 ms 468 KB Output is correct
52 Correct 114 ms 464 KB Output is correct
53 Correct 122 ms 468 KB Output is correct
54 Correct 111 ms 468 KB Output is correct
55 Correct 118 ms 588 KB Output is correct
56 Correct 115 ms 476 KB Output is correct
57 Correct 123 ms 464 KB Output is correct
58 Correct 111 ms 468 KB Output is correct
59 Correct 135 ms 472 KB Output is correct
60 Correct 114 ms 480 KB Output is correct
61 Correct 126 ms 464 KB Output is correct
62 Correct 108 ms 476 KB Output is correct
63 Correct 114 ms 468 KB Output is correct
64 Correct 116 ms 592 KB Output is correct
65 Correct 121 ms 492 KB Output is correct