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Submission #481441

# Submission time Handle Problem Language Result Execution time Memory
481441 2021-10-20T20:57:41 Z schiftyfive4 Toll (BOI17_toll) C++14
100 / 100
 112 ms 12812 KB 
#include <bits/stdc++.h>

using namespace std;
using i64 = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int k, n, m, q;
    cin >> k >> n >> m >> q;

    int g = (n + k - 1) / k;
    int go[g][16][k][k];

    for (int i = 0; i < g; i++) {
        for (int b = 0; b < 16; b++) {
            for (int c = 0; c < k; c++) {
                for (int d = 0; d < k; d++) {
                    go[i][b][c][d] = 1e9;
                }
            }
        }
    }

    for (int i = 0; i < m; i++) {
        int a, b, w;
        cin >> a >> b >> w;
        go[a / k][0][a % k][b % k] = w;
    }

    for (int b = 1; (1 << b) < g; b++) {
        for (int i = 0; i < g; i++) {
            if (i + (1 << b) > g - 1) break;
            for (int c = 0; c < k; c++) {
                for (int d = 0; d < k; d++) {
                    for (int mid = 0; mid < k; mid++) {
                        go[i][b][c][d] = min(go[i][b][c][d], go[i][b - 1][c][mid] + go[i + (1 << (b - 1))][b - 1][mid][d]);
                    }
                }
            }
        }
    }

    while (q--) {
        int a, b;
        cin >> a >> b;
        int x = a / k, y = b / k;
        int d = y - x;
        vector<vector<int>> dp(k, vector<int>(k, 1e9));
        for (int i = 0; i < k; i++) {
            dp[i][i] = 0;
        }
        for (int b = 0; (1 << b) <= d; b++) {
            if (d & (1 << b)) {
                vector<vector<int>> dq(k, vector<int>(k, 1e9));
                for (int to = 0; to < k; to++) {
                    for (int from = 0; from < k; from++) {
                        for (int mid = 0; mid < k; mid++) {
                            dq[from][to] = min(dq[from][to], dp[from][mid] + go[x][b][mid][to]);
                        }
                    }
                }
                swap(dp, dq);
                x += 1 << b;
            }
        }
        int ans = dp[a % k][b % k];
        cout << (ans == 1e9 ? -1 : ans) << '\n';
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 3440 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 27 ms 3452 KB Output is correct
9 Correct 26 ms 3436 KB Output is correct
10 Correct 16 ms 3452 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 6584 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 7 ms 396 KB Output is correct
8 Correct 8 ms 460 KB Output is correct
9 Correct 27 ms 3448 KB Output is correct
10 Correct 68 ms 9696 KB Output is correct
11 Correct 44 ms 6596 KB Output is correct
12 Correct 54 ms 9684 KB Output is correct
13 Correct 63 ms 9824 KB Output is correct
14 Correct 34 ms 5836 KB Output is correct
15 Correct 45 ms 9704 KB Output is correct
16 Correct 44 ms 9676 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 18 ms 3404 KB Output is correct
11 Correct 32 ms 6476 KB Output is correct
12 Correct 61 ms 9688 KB Output is correct
13 Correct 52 ms 9676 KB Output is correct
14 Correct 47 ms 9676 KB Output is correct
15 Correct 36 ms 9676 KB Output is correct
16 Correct 36 ms 9572 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 18 ms 3404 KB Output is correct
11 Correct 32 ms 6476 KB Output is correct
12 Correct 61 ms 9688 KB Output is correct
13 Correct 52 ms 9676 KB Output is correct
14 Correct 47 ms 9676 KB Output is correct
15 Correct 36 ms 9676 KB Output is correct
16 Correct 36 ms 9572 KB Output is correct
17 Correct 36 ms 6476 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 284 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 3 ms 460 KB Output is correct
25 Correct 6 ms 648 KB Output is correct
26 Correct 5 ms 460 KB Output is correct
27 Correct 21 ms 3444 KB Output is correct
28 Correct 54 ms 9676 KB Output is correct
29 Correct 58 ms 9692 KB Output is correct
30 Correct 49 ms 9696 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 3440 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 27 ms 3452 KB Output is correct
9 Correct 26 ms 3436 KB Output is correct
10 Correct 16 ms 3452 KB Output is correct
11 Correct 46 ms 6584 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 7 ms 396 KB Output is correct
18 Correct 8 ms 460 KB Output is correct
19 Correct 27 ms 3448 KB Output is correct
20 Correct 68 ms 9696 KB Output is correct
21 Correct 44 ms 6596 KB Output is correct
22 Correct 54 ms 9684 KB Output is correct
23 Correct 63 ms 9824 KB Output is correct
24 Correct 34 ms 5836 KB Output is correct
25 Correct 45 ms 9704 KB Output is correct
26 Correct 44 ms 9676 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 2 ms 460 KB Output is correct
36 Correct 18 ms 3404 KB Output is correct
37 Correct 32 ms 6476 KB Output is correct
38 Correct 61 ms 9688 KB Output is correct
39 Correct 52 ms 9676 KB Output is correct
40 Correct 47 ms 9676 KB Output is correct
41 Correct 36 ms 9676 KB Output is correct
42 Correct 36 ms 9572 KB Output is correct
43 Correct 36 ms 6476 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 0 ms 284 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 2 ms 332 KB Output is correct
50 Correct 3 ms 460 KB Output is correct
51 Correct 6 ms 648 KB Output is correct
52 Correct 5 ms 460 KB Output is correct
53 Correct 21 ms 3444 KB Output is correct
54 Correct 54 ms 9676 KB Output is correct
55 Correct 58 ms 9692 KB Output is correct
56 Correct 49 ms 9696 KB Output is correct
57 Correct 112 ms 12812 KB Output is correct
58 Correct 27 ms 3452 KB Output is correct
59 Correct 45 ms 6560 KB Output is correct