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Submission #753401

# Submission time Handle Problem Language Result Execution time Memory
753401 2023-06-05T07:15:30 Z Jomnoi Cyberland (APIO23_cyberland) C++17
20 / 100
 3000 ms 24196 KB 
#include <bits/stdc++.h>
#include "cyberland.h"
using namespace std;

const int MAX_N = 1e5 + 5;
const int MAX_K = 35;
const long long INF = 1e18 + 7;

vector <pair <int, int>> graph[MAX_N];
double dist[MAX_N][MAX_K];
bool visited[MAX_N][MAX_K];

double solve(int N, int M, int K, int H, vector <int> x, vector <int> y, vector <int> c, vector <int> arr) {
    for (int i = 0; i < N; i++) {
        graph[i].clear();
        for (int k = 0; k <= K; k++) {
            dist[i][k] = INF;
            visited[i][k] = false;
        }
    }

    for (int i = 0; i < M; i++) {
        graph[x[i]].emplace_back(y[i], c[i]);
        graph[y[i]].emplace_back(x[i], c[i]);
    }

    priority_queue <tuple <double, int, int>> pq;
    pq.emplace(0, 0, 0);
    dist[0][0] = 0;
    while (!pq.empty()) {
        auto [d, k, u] = pq.top();
        pq.pop();

        if (visited[u][k] == true) continue;
        visited[u][k] = true;

        for (auto [v, c] : graph[u]) {
            if (v == H) continue;

            if (visited[v][k] == false and dist[u][k] + c < dist[v][k]) {
                dist[v][k] = dist[u][k] + c;
                pq.emplace(-dist[v][k], k, v);
            }

            if (arr[v] == 0 and visited[v][k] == false and 0 < dist[v][k]) {
                dist[v][k] = 0;
                pq.emplace(0, k, v);
            }
            else if (arr[v] == 2 and k < K and visited[v][k + 1] == false and (dist[u][k] + c) / 2 < dist[v][k + 1]) {
                dist[v][k + 1] = (dist[u][k] + c) / 2;
                pq.emplace(-dist[v][k + 1], k + 1, v);
            }
        }
    }

    double res = INF;
    for (int k = 0; k <= K; k++) {
        for (auto [v, c] : graph[H]) {
            res = min(res, dist[v][k] + c);
        }
    }

    if (res == INF) res = -1;
    return res;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2816 KB Correct.
2 Correct 20 ms 2836 KB Correct.

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 3112 KB Correct.
2 Correct 24 ms 3108 KB Correct.
3 Correct 23 ms 3144 KB Correct.
4 Correct 30 ms 3084 KB Correct.
5 Correct 25 ms 3216 KB Correct.
6 Correct 26 ms 6428 KB Correct.
7 Correct 29 ms 6344 KB Correct.
8 Correct 18 ms 10124 KB Correct.
9 Correct 24 ms 2772 KB Correct.
10 Correct 29 ms 2772 KB Correct.

Subtask #3
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 3088 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 73 ms 24196 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 3156 KB Correct.
2 Correct 27 ms 3248 KB Correct.
3 Correct 23 ms 3140 KB Correct.
4 Correct 28 ms 6400 KB Correct.
5 Correct 20 ms 2772 KB Correct.

Subtask #6
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 3140 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 244 ms 3640 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3069 ms 12640 KB Time limit exceeded
2 Halted 0 ms 0 KB -