Submission #1253508

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253508		anfi	Cyberland (APIO23_cyberland)	C++20	Compilation error	0 ms	0 KiB

cyberland

#include <bits/stdc++.h>
using namespace std;
const double INF = 1e18;

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

    vector<vector<double>> dist(N, vector<double>(K+1, INF));
    dist[0][0] = 0.0;

    using State = pair<double, pair<int,int>>;
    priority_queue<State, vector<State>, greater<State>> pq;
    pq.push({0.0, {0, 0}});

    while(!pq.empty()){
        auto [d, uc] = pq.top(); pq.pop();
        int u = uc.first, used = uc.second;
        if (d > dist[u][used]) continue;

        for(auto& [v, w] : adj[u]){
            double nd = d + w;
            int nk = used;
            if (arr[v] == 0) {
                nd = 0.0;
            }
            else if (arr[v] == 2 && used < K) {
                nd *= 0.5;
                nk = used + 1;
            }

            if (nd + 1e-12 < dist[v][nk]) {
                dist[v][nk] = nd;
                pq.push({nd, {v, nk}});
            }
        }
    }

    double ans = INF;
    for(int k = 0; k <= K; k++){
        ans = min(ans, dist[H][k]);
    }
    return (ans >= INF/2 ? -1.0 : ans);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccDTjsnt.o: in function `main':
grader.cpp:(.text.startup+0x71e): undefined reference to `solve(int, int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status