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Submission #683488

# Submission time Handle Problem Language Result Execution time Memory
683488 2023-01-18T14:51:00 Z finn__ Toll (BOI17_toll) C++17
100 / 100
 222 ms 59308 KB 
#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    size_t n, m, o, k;
    cin >> k >> n >> m >> o;

    vector<vector<pair<unsigned, unsigned>>> g(n);
    for (size_t i = 0; i < m; i++)
    {
        unsigned u, v, t;
        cin >> u >> v >> t;
        g[u].emplace_back(v, t);
    }

    vector<vector<vector<unsigned>>> dp(n, vector<vector<unsigned>>(1, vector<unsigned>(k, UINT_MAX)));
    for (size_t u = 0; u < n; u++)
        for (auto const &[v, w] : g[u])
            dp[u][0][v % k] = w;

    for (size_t j = 1; j <= n / k; j <<= 1)
        for (size_t u = 0; u < n; u++)
        {
            if ((u / k + j) * k >= n)
                continue;
            dp[u].emplace_back(k, UINT_MAX);
            for (size_t h = 0; h < k; h++)
                for (size_t i = 0; i < k && (u / k + j) * k + i < n; i++)
                {
                    if (dp[u][dp[u].size() - 2][i] != UINT_MAX &&
                        dp[u].size() - 2 < dp[(u / k + j) * k + i].size() &&
                        dp[(u / k + j) * k + i][dp[u].size() - 2][h] != UINT_MAX)
                        dp[u].back()[h] =
                            min(dp[u].back()[h],
                                dp[u][dp[u].size() - 2][i] + dp[(u / k + j) * k + i][dp[u].size() - 2][h]);
                }
        }

    for (size_t i = 0; i < o; i++)
    {
        unsigned u, v;
        cin >> u >> v;

        if (u / k >= v / k)
        {
            cout << -1 << '\n';
            continue;
        }

        size_t z = 0, h = v / k - u / k;
        vector<unsigned> d(k, UINT_MAX);
        d[u % k] = 0;
        while (h)
        {
            if (h & 1)
            {
                vector<unsigned> e(k, UINT_MAX);
                for (size_t j = 0; j < k; j++)
                    if (d[j] != UINT_MAX)
                        for (size_t l = 0; l < k; l++)
                            if (z < dp[(u / k) * k + j].size() &&
                                dp[(u / k) * k + j][z][l] != UINT_MAX)
                                e[l] = min(e[l], d[j] + dp[(u / k) * k + j][z][l]);
                u = (u / k + (1 << z)) * k + u % k;
                swap(d, e);
            }
            z++;
            h >>= 1;
        }

        if (d[v % k] == UINT_MAX)
            cout << -1 << '\n';
        else
            cout << d[v % k] << '\n';
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 58456 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 1108 KB Output is correct
6 Correct 2 ms 980 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 156 ms 58324 KB Output is correct
9 Correct 142 ms 58408 KB Output is correct
10 Correct 108 ms 56732 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 165 ms 47668 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 7 ms 1204 KB Output is correct
8 Correct 6 ms 1104 KB Output is correct
9 Correct 127 ms 59256 KB Output is correct
10 Correct 202 ms 48968 KB Output is correct
11 Correct 155 ms 49316 KB Output is correct
12 Correct 142 ms 47704 KB Output is correct
13 Correct 154 ms 29876 KB Output is correct
14 Correct 98 ms 29388 KB Output is correct
15 Correct 121 ms 28156 KB Output is correct
16 Correct 138 ms 28100 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 4 ms 1112 KB Output is correct
9 Correct 3 ms 980 KB Output is correct
10 Correct 124 ms 59224 KB Output is correct
11 Correct 139 ms 49164 KB Output is correct
12 Correct 173 ms 48864 KB Output is correct
13 Correct 180 ms 49320 KB Output is correct
14 Correct 155 ms 48488 KB Output is correct
15 Correct 122 ms 28000 KB Output is correct
16 Correct 114 ms 28112 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 4 ms 1112 KB Output is correct
9 Correct 3 ms 980 KB Output is correct
10 Correct 124 ms 59224 KB Output is correct
11 Correct 139 ms 49164 KB Output is correct
12 Correct 173 ms 48864 KB Output is correct
13 Correct 180 ms 49320 KB Output is correct
14 Correct 155 ms 48488 KB Output is correct
15 Correct 122 ms 28000 KB Output is correct
16 Correct 114 ms 28112 KB Output is correct
17 Correct 141 ms 49132 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 320 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 4 ms 1108 KB Output is correct
24 Correct 4 ms 1096 KB Output is correct
25 Correct 5 ms 1072 KB Output is correct
26 Correct 5 ms 1108 KB Output is correct
27 Correct 146 ms 59160 KB Output is correct
28 Correct 180 ms 48904 KB Output is correct
29 Correct 190 ms 49208 KB Output is correct
30 Correct 172 ms 48572 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 58456 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 1108 KB Output is correct
6 Correct 2 ms 980 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 156 ms 58324 KB Output is correct
9 Correct 142 ms 58408 KB Output is correct
10 Correct 108 ms 56732 KB Output is correct
11 Correct 165 ms 47668 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 7 ms 1204 KB Output is correct
18 Correct 6 ms 1104 KB Output is correct
19 Correct 127 ms 59256 KB Output is correct
20 Correct 202 ms 48968 KB Output is correct
21 Correct 155 ms 49316 KB Output is correct
22 Correct 142 ms 47704 KB Output is correct
23 Correct 154 ms 29876 KB Output is correct
24 Correct 98 ms 29388 KB Output is correct
25 Correct 121 ms 28156 KB Output is correct
26 Correct 138 ms 28100 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 324 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 2 ms 1108 KB Output is correct
33 Correct 2 ms 980 KB Output is correct
34 Correct 4 ms 1112 KB Output is correct
35 Correct 3 ms 980 KB Output is correct
36 Correct 124 ms 59224 KB Output is correct
37 Correct 139 ms 49164 KB Output is correct
38 Correct 173 ms 48864 KB Output is correct
39 Correct 180 ms 49320 KB Output is correct
40 Correct 155 ms 48488 KB Output is correct
41 Correct 122 ms 28000 KB Output is correct
42 Correct 114 ms 28112 KB Output is correct
43 Correct 141 ms 49132 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 1 ms 320 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 320 KB Output is correct
49 Correct 4 ms 1108 KB Output is correct
50 Correct 4 ms 1096 KB Output is correct
51 Correct 5 ms 1072 KB Output is correct
52 Correct 5 ms 1108 KB Output is correct
53 Correct 146 ms 59160 KB Output is correct
54 Correct 180 ms 48904 KB Output is correct
55 Correct 190 ms 49208 KB Output is correct
56 Correct 172 ms 48572 KB Output is correct
57 Correct 222 ms 48636 KB Output is correct
58 Correct 142 ms 59308 KB Output is correct
59 Correct 184 ms 49376 KB Output is correct