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Submission #1062709

# Submission time Handle Problem Language Result Execution time Memory
1062709 2024-08-17T09:58:51 Z stdfloat Cyberland (APIO23_cyberland) C++17
44 / 100
 80 ms 108180 KB 
#include <bits/stdc++.h>
#include "cyberland.h"
// #include "stub.cpp"
using namespace std;

#define ff  first
#define ss  second
#define pii pair<int, int>

double solve(int n, int M, int K, int H, vector<int> X, vector<int> Y, vector<int> C, vector<int> a) {
    vector<pii> E[n];
    for (int i = 0; i < M; i++) {
        E[X[i]].push_back({Y[i], C[i]});
        E[Y[i]].push_back({X[i], C[i]});
    }

    queue<int> q;
    vector<bool> vis0(n);
    q.push(0); vis0[0] = true;
    while (!q.empty()) {
        int x = q.front(); q.pop();

        if (x == H) continue;

        for (auto [i, w] : E[x]) {
            if (!vis0[i]) {
                q.push(i);
                vis0[i] = true;
            }
        }
    }

    if (!vis0[H]) return -1;

    vector<vector<double>> dis(n, vector<double>((int)1e2 + 1, 1e18));
    priority_queue<pair<double, pii>> pq;
    for (int i = 0; i < n; i++) {
        if (!i || (!a[i] && vis0[i])) {
            dis[i][0] = 0;
            pq.push({0, {i, 0}});
        }
    }
    while (!pq.empty()) {
        double d = pq.top().ff; d = -d;
        auto [x, y] = pq.top().ss; pq.pop();
    
        if (d != dis[x][y]) continue;

        if (x == H) return d;
    
        for (auto [i, w] : E[x]) {
            if (!a[i]) continue;

            if (d + w < dis[i][y]) {
                dis[i][y] = d + w;
                pq.push({-dis[i][y], {i, y}});
            }
            if (a[x] == 2 && y < (int)1e2 && d / 2 + w < dis[i][y + 1]) {
                dis[i][y + w] = d / 2 + w;
                pq.push({-dis[i][y + 1], {i, y + 1}});
            }
            if (a[i] == 2 && y < (int)1e2 && (d + w) / 2 < dis[i][y + 1]) {
                dis[i][y + 1] = (d + w) / 2;
                pq.push({-dis[i][y + 1], {i, y + 1}});
            }
        }
    }

    assert(false);
}

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1372 KB Correct.
2 Correct 26 ms 1308 KB Correct.
3 Correct 30 ms 1356 KB Correct.
4 Correct 23 ms 1364 KB Correct.
5 Correct 23 ms 1392 KB Correct.
6 Correct 21 ms 9344 KB Correct.
7 Correct 27 ms 9064 KB Correct.
8 Correct 16 ms 18268 KB Correct.
9 Correct 18 ms 348 KB Correct.
10 Correct 18 ms 604 KB Correct.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 1188 KB Correct.
2 Correct 25 ms 1376 KB Correct.
3 Correct 21 ms 1412 KB Correct.
4 Correct 20 ms 600 KB Correct.
5 Correct 20 ms 600 KB Correct.
6 Correct 6 ms 7772 KB Correct.

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Runtime error 80 ms 108180 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1296 KB Correct.
2 Correct 20 ms 1116 KB Correct.
3 Correct 19 ms 1360 KB Correct.
4 Correct 22 ms 9048 KB Correct.
5 Correct 15 ms 348 KB Correct.

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 1340 KB Correct.
2 Correct 18 ms 1332 KB Correct.
3 Correct 27 ms 7260 KB Correct.
4 Correct 14 ms 5688 KB Correct.
5 Correct 17 ms 348 KB Correct.
6 Correct 19 ms 1296 KB Correct.

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 1880 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 1884 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -