Submission #1263977

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263977		dungsnfg	Crocodile's Underground City (IOI11_crocodile)	C++20	Compilation error	0 ms	0 KiB

crocodile

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll INF = LLONG_MAX / 4;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    int N, M, K;
    cin >> N >> M >> K;

    vector<vector<pair<int, ll>>> adj(N);
    int u, v;
    ll w;
    for(int i = 0; i < M; i++){
        cin >> u >> v >> w;
        adj[u].emplace_back(v, w);
        adj[v].emplace_back(u, w);
    }

    vector<ll> T(N, INF);
    vector<int> P(K);
    priority_queue<pair<ll,int>, vector<pair<ll,int>>, greater<>> pq;

    for(int i = 0; i < K; i++){
        cin >> P[i];
        T[P[i]] = 0;
        pq.emplace(0LL, P[i]);
    }

    vector<ll> best1(N, INF), best2(N, INF);

    while(!pq.empty()){
        auto [curT, x] = pq.top();
        pq.pop();
        if (curT != T[x]) continue;

        for(auto &[nei, len] : adj[x]){
            ll candidate = curT + len;
            if (candidate < best1[nei]) {
                best2[nei] = best1[nei];
                best1[nei] = candidate;
            }
            else if (candidate < best2[nei]) {
                best2[nei] = candidate;
            }

            ll newT = best2[nei];
            if (newT < T[nei]) {
                T[nei] = newT;
                pq.emplace(T[nei], nei);
            }
        }
    }

    cout << T[0] << "\n";
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccgcYt54.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccqcH2LW.o:crocodile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccgcYt54.o: in function `main':
grader.cpp:(.text.startup+0x36): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status