Submission #1228020

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228020		jfioashfn333	Cyberland (APIO23_cyberland)	C++20	15 / 100	23 ms	5700 KiB

cyberland

#include "cyberland.h"

#include <vector>
#include <queue>
#include <limits>
using namespace std;

double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
    vector<vector<pair<int, int>>> g(N);
    for (int i = 0; i < M; i++) {
        g[x[i]].emplace_back(y[i], c[i]);
        g[y[i]].emplace_back(x[i], c[i]);
    }

    vector<double> d(N, 1e18);
    d[0] = 0;
    priority_queue<pair<double, int>, vector<pair<double, int>>, greater<>> q;
    q.emplace(0, 0);

    while (!q.empty()) {
        auto [w, u] = q.top(); q.pop();
        if (w > d[u]) continue;
        for (auto [v, cost] : g[u]) {
            double nw = d[u] + cost;
            if (arr[v] == 0) nw = 0;
            if (nw < d[v]) {
                d[v] = nw;
                q.emplace(nw, v);
            }
        }
    }

    if (d[H] == 1e18) return -1;
    return d[H];
}

• Subtask 1: 0 / 5
• Subtask 2: 8 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 7 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3