oj.uz

Submission #935680

# Submission time Handle Problem Language Result Execution time Memory
935680 2024-02-29T11:14:19 Z Pannda Escape Route (JOI21_escape_route) C++17
70 / 100
 9000 ms 237260 KB 
#include "escape_route.h"

#include <bits/stdc++.h>
using namespace std;

vector<long long> calculate_necessary_time(int n, int m, long long S, int q, vector<int> A, vector<int> B, vector<long long> L, vector<long long> C, vector<int> U, vector<int> V, vector<long long> T) {
    const long long INF = 4e18;
    auto getTime = []() { return chrono::steady_clock::now().time_since_epoch().count(); };
    double time0 = getTime();

    vector<vector<pair<int, int>>> adj(n);
    for (int i = 0; i < m; i++) {
        int u = A[i];
        int v = B[i];
        adj[u].push_back({v, i});
        adj[v].push_back({u, i});
    }

    auto [f, g] = [&]() -> pair<vector<vector<vector<long long>>>, vector<vector<long long>>> {
        vector<vector<vector<long long>>> f(n);
        vector<vector<long long>> g(n);
        for (int source = 0; source < n; source++) {
            long long t = 0;
            while (true) {
                priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<>> pq;
                vector<long long> dist(n, INF);
                vector<int> par(n, -1);
                dist[source] = 0;
                pq.push({dist[source], source});
                while (!pq.empty()) {
                    auto [d, u] = pq.top();
                    pq.pop();
                    if (d != dist[u]) continue;
                    for (auto [v, i] : adj[u]) {
                        if (t + dist[u] > C[i] - L[i]) continue;
                        if (dist[u] + L[i] < dist[v]) {
                            dist[v] = dist[u] + L[i];
                            par[v] = i;
                            pq.push({dist[v], v});
                        }
                    }
                }
                f[source].push_back(dist);
                g[source].push_back(t);
                long long new_t = INF;
                for (int u = 0; u < n; u++) {
                    if (par[u] == -1) continue;
                    new_t = min(new_t, C[par[u]] - dist[u] + 1);
                }
                if (new_t >= S || new_t == t) break;
                t = new_t;
            }
        }
        return make_pair(f, g);
    }();

    vector<vector<long long>> dist = [&]() -> vector<vector<long long>> {
        vector<vector<long long>> dist(n, vector<long long>(n, INF));
        for (int u = 0; u < n; u++) {
            for (int v = 0; v < n; v++) {
                if (f[u][0][v] != INF) {
                    dist[u][v] = S;
                }
            }
        }
        for (int u = 0; u < n; u++) {
            dist[u][u] = 0;
        }
        for (int w = 0; w < n; w++) {
            for (int u = 0; u < n; u++) {
                for (int v = 0; v < n; v++) {
                    dist[u][v] = min(dist[u][v], dist[u][w] + dist[w][v]);
                }
            }
        }
        vector<vector<long long>> true_dist = dist;
        for (int u = 0; u < n; u++) {
            for (int v = 0; v < n; v++) {
                for (int w = 0; w < n; w++) {
                    if (f[w][0][v] != INF) {
                        true_dist[u][v] = min(true_dist[u][v], dist[u][w] + f[w][0][v]);
                    }
                }
            }
        }
        return true_dist;
    }();

    return [&]() -> vector<long long> {
        vector<vector<vector<long long>>> memorize(n);
        for (int u = 0; u < n; u++) {
            memorize[u].resize(f[u].size(), vector<long long>(n, -1));
        }
        auto get = [&](int u, int v, long long t) -> long long {
            if ((getTime() - time0) / 1e9 > 6) return -1;
            int i = upper_bound(g[u].begin(), g[u].end(), t) - g[u].begin() - 1;
            if (f[u][i][v] != INF) {
                return f[u][i][v];
            }
            if (memorize[u][i][v] == -1) {
                memorize[u][i][v] = INF;
                for (int w = 0; w < n; w++) {
                    if (f[u][i][w] != INF) {
                        memorize[u][i][v] = min(memorize[u][i][v],dist[w][v]);
                    }
                }
            }
            return memorize[u][i][v] + S - t;
        };
        vector<long long> res(q);
        for (int i = 0; i < q; i++) {
            res[i] = get(U[i], V[i], T[i]);
        }
        return res;
    }();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 65192 KB Output is correct
2 Correct 17 ms 65188 KB Output is correct
3 Correct 58 ms 65164 KB Output is correct
4 Correct 16 ms 65040 KB Output is correct
5 Correct 11 ms 65112 KB Output is correct
6 Correct 15 ms 65116 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 713 ms 166892 KB Output is correct
2 Correct 786 ms 192784 KB Output is correct
3 Correct 375 ms 155784 KB Output is correct
4 Correct 879 ms 202180 KB Output is correct
5 Correct 876 ms 201744 KB Output is correct
6 Correct 9 ms 65116 KB Output is correct
7 Correct 375 ms 155760 KB Output is correct
8 Correct 368 ms 193916 KB Output is correct
9 Correct 588 ms 155176 KB Output is correct
10 Correct 868 ms 201872 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 65192 KB Output is correct
2 Correct 17 ms 65188 KB Output is correct
3 Correct 58 ms 65164 KB Output is correct
4 Correct 16 ms 65040 KB Output is correct
5 Correct 11 ms 65112 KB Output is correct
6 Correct 15 ms 65116 KB Output is correct
7 Correct 713 ms 166892 KB Output is correct
8 Correct 786 ms 192784 KB Output is correct
9 Correct 375 ms 155784 KB Output is correct
10 Correct 879 ms 202180 KB Output is correct
11 Correct 876 ms 201744 KB Output is correct
12 Correct 9 ms 65116 KB Output is correct
13 Correct 375 ms 155760 KB Output is correct
14 Correct 368 ms 193916 KB Output is correct
15 Correct 588 ms 155176 KB Output is correct
16 Correct 868 ms 201872 KB Output is correct
17 Correct 794 ms 168224 KB Output is correct
18 Correct 1043 ms 169152 KB Output is correct
19 Correct 949 ms 195124 KB Output is correct
20 Correct 481 ms 158168 KB Output is correct
21 Correct 1171 ms 204816 KB Output is correct
22 Correct 1056 ms 205196 KB Output is correct
23 Correct 446 ms 157644 KB Output is correct
24 Correct 380 ms 196228 KB Output is correct
25 Correct 768 ms 157236 KB Output is correct
26 Correct 1114 ms 205536 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 65192 KB Output is correct
2 Correct 17 ms 65188 KB Output is correct
3 Correct 58 ms 65164 KB Output is correct
4 Correct 16 ms 65040 KB Output is correct
5 Correct 11 ms 65112 KB Output is correct
6 Correct 15 ms 65116 KB Output is correct
7 Correct 713 ms 166892 KB Output is correct
8 Correct 786 ms 192784 KB Output is correct
9 Correct 375 ms 155784 KB Output is correct
10 Correct 879 ms 202180 KB Output is correct
11 Correct 876 ms 201744 KB Output is correct
12 Correct 9 ms 65116 KB Output is correct
13 Correct 375 ms 155760 KB Output is correct
14 Correct 368 ms 193916 KB Output is correct
15 Correct 588 ms 155176 KB Output is correct
16 Correct 868 ms 201872 KB Output is correct
17 Correct 794 ms 168224 KB Output is correct
18 Correct 1043 ms 169152 KB Output is correct
19 Correct 949 ms 195124 KB Output is correct
20 Correct 481 ms 158168 KB Output is correct
21 Correct 1171 ms 204816 KB Output is correct
22 Correct 1056 ms 205196 KB Output is correct
23 Correct 446 ms 157644 KB Output is correct
24 Correct 380 ms 196228 KB Output is correct
25 Correct 768 ms 157236 KB Output is correct
26 Correct 1114 ms 205536 KB Output is correct
27 Correct 2391 ms 190576 KB Output is correct
28 Correct 3271 ms 199768 KB Output is correct
29 Correct 3456 ms 224752 KB Output is correct
30 Correct 615 ms 156800 KB Output is correct
31 Correct 4027 ms 233276 KB Output is correct
32 Correct 4027 ms 233824 KB Output is correct
33 Correct 365 ms 197216 KB Output is correct
34 Correct 2315 ms 183780 KB Output is correct
35 Correct 3594 ms 230268 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 65192 KB Output is correct
2 Correct 17 ms 65188 KB Output is correct
3 Correct 58 ms 65164 KB Output is correct
4 Correct 16 ms 65040 KB Output is correct
5 Correct 11 ms 65112 KB Output is correct
6 Correct 15 ms 65116 KB Output is correct
7 Correct 713 ms 166892 KB Output is correct
8 Correct 786 ms 192784 KB Output is correct
9 Correct 375 ms 155784 KB Output is correct
10 Correct 879 ms 202180 KB Output is correct
11 Correct 876 ms 201744 KB Output is correct
12 Correct 9 ms 65116 KB Output is correct
13 Correct 375 ms 155760 KB Output is correct
14 Correct 368 ms 193916 KB Output is correct
15 Correct 588 ms 155176 KB Output is correct
16 Correct 868 ms 201872 KB Output is correct
17 Correct 794 ms 168224 KB Output is correct
18 Correct 1043 ms 169152 KB Output is correct
19 Correct 949 ms 195124 KB Output is correct
20 Correct 481 ms 158168 KB Output is correct
21 Correct 1171 ms 204816 KB Output is correct
22 Correct 1056 ms 205196 KB Output is correct
23 Correct 446 ms 157644 KB Output is correct
24 Correct 380 ms 196228 KB Output is correct
25 Correct 768 ms 157236 KB Output is correct
26 Correct 1114 ms 205536 KB Output is correct
27 Correct 2391 ms 190576 KB Output is correct
28 Correct 3271 ms 199768 KB Output is correct
29 Correct 3456 ms 224752 KB Output is correct
30 Correct 615 ms 156800 KB Output is correct
31 Correct 4027 ms 233276 KB Output is correct
32 Correct 4027 ms 233824 KB Output is correct
33 Correct 365 ms 197216 KB Output is correct
34 Correct 2315 ms 183780 KB Output is correct
35 Correct 3594 ms 230268 KB Output is correct
36 Execution timed out 9083 ms 237260 KB Time limit exceeded
37 Halted 0 ms 0 KB -