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Submission #481440

# Submission time Handle Problem Language Result Execution time Memory
481440 2021-10-20T20:57:07 Z schiftyfive4 Toll (BOI17_toll) C++14
100 / 100
 123 ms 16172 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;
        if (x == y) {
            cout << -1 << '\n';
            continue;
        }
        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 47 ms 3404 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 28 ms 3444 KB Output is correct
9 Correct 27 ms 3432 KB Output is correct
10 Correct 16 ms 3404 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 6564 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 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 460 KB Output is correct
8 Correct 9 ms 588 KB Output is correct
9 Correct 28 ms 4300 KB Output is correct
10 Correct 74 ms 11968 KB Output is correct
11 Correct 58 ms 8268 KB Output is correct
12 Correct 75 ms 10992 KB Output is correct
13 Correct 65 ms 11980 KB Output is correct
14 Correct 35 ms 7364 KB Output is correct
15 Correct 45 ms 10904 KB Output is correct
16 Correct 47 ms 10912 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 1 ms 204 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Correct 20 ms 4192 KB Output is correct
11 Correct 36 ms 8068 KB Output is correct
12 Correct 53 ms 11856 KB Output is correct
13 Correct 62 ms 12088 KB Output is correct
14 Correct 53 ms 11468 KB Output is correct
15 Correct 40 ms 10820 KB Output is correct
16 Correct 40 ms 10876 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 1 ms 204 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Correct 20 ms 4192 KB Output is correct
11 Correct 36 ms 8068 KB Output is correct
12 Correct 53 ms 11856 KB Output is correct
13 Correct 62 ms 12088 KB Output is correct
14 Correct 53 ms 11468 KB Output is correct
15 Correct 40 ms 10820 KB Output is correct
16 Correct 40 ms 10876 KB Output is correct
17 Correct 38 ms 8092 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 308 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 312 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 3 ms 460 KB Output is correct
25 Correct 7 ms 716 KB Output is correct
26 Correct 6 ms 640 KB Output is correct
27 Correct 22 ms 4272 KB Output is correct
28 Correct 66 ms 11856 KB Output is correct
29 Correct 60 ms 12104 KB Output is correct
30 Correct 68 ms 11596 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 3404 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 28 ms 3444 KB Output is correct
9 Correct 27 ms 3432 KB Output is correct
10 Correct 16 ms 3404 KB Output is correct
11 Correct 66 ms 6564 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 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 460 KB Output is correct
18 Correct 9 ms 588 KB Output is correct
19 Correct 28 ms 4300 KB Output is correct
20 Correct 74 ms 11968 KB Output is correct
21 Correct 58 ms 8268 KB Output is correct
22 Correct 75 ms 10992 KB Output is correct
23 Correct 65 ms 11980 KB Output is correct
24 Correct 35 ms 7364 KB Output is correct
25 Correct 45 ms 10904 KB Output is correct
26 Correct 47 ms 10912 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 1 ms 204 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 3 ms 588 KB Output is correct
35 Correct 3 ms 588 KB Output is correct
36 Correct 20 ms 4192 KB Output is correct
37 Correct 36 ms 8068 KB Output is correct
38 Correct 53 ms 11856 KB Output is correct
39 Correct 62 ms 12088 KB Output is correct
40 Correct 53 ms 11468 KB Output is correct
41 Correct 40 ms 10820 KB Output is correct
42 Correct 40 ms 10876 KB Output is correct
43 Correct 38 ms 8092 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 0 ms 308 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 1 ms 312 KB Output is correct
49 Correct 2 ms 332 KB Output is correct
50 Correct 3 ms 460 KB Output is correct
51 Correct 7 ms 716 KB Output is correct
52 Correct 6 ms 640 KB Output is correct
53 Correct 22 ms 4272 KB Output is correct
54 Correct 66 ms 11856 KB Output is correct
55 Correct 60 ms 12104 KB Output is correct
56 Correct 68 ms 11596 KB Output is correct
57 Correct 123 ms 16172 KB Output is correct
58 Correct 40 ms 4324 KB Output is correct
59 Correct 51 ms 8340 KB Output is correct