제출 #1211879

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1211879		ackerman2840	악어의 지하 도시 (IOI11_crocodile)	C++20	컴파일 에러	0 ms	0 KiB

crocodile

#include <bits/stdc++.h>
using namespace std;

using pii = pair<int, int>;
const long long INF = 1e18;

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

    int n, m, k;
    cin >> n >> m >> k;

    vector<vector<pii>> adj(n);
    for (int i = 0; i < m; ++i) {
        int u, v, d;
        cin >> u >> v >> d;
        adj[u].push_back({v, d});
        adj[v].push_back({u, d});
    }

    vector<long long> exits(k);
    for (int i = 0; i < k; ++i) {
        cin >> exits[i];
    }

    vector<array<long long, 2>> dist(n, {INF, INF});
    priority_queue<pii> pq;

    for (int i = 0; i < k; ++i) {
        dist[exits[i]][0] = 0;
        dist[exits[i]][1] = 0;
        pq.push({0, exits[i]});
    }

    while (!pq.empty()) {
        auto [neg_d, node] = pq.top(); pq.pop();
        long long d = -neg_d;

        if (dist[node][1] != d) continue;

        for (auto [to, dd] : adj[node]) {
            if (dist[to][0] > d + dd) {
                if (dist[to][0] < dist[to][1]) {
                    pq.push({-dist[to][0], to});
                }
                dist[to][1] = dist[to][0];
                dist[to][0] = d + dd;
            } else if (dist[to][1] > d + dd) {
                dist[to][1] = d + dd;
                pq.push({-dist[to][1], to});
            }
        }
    }

    cout << dist[0][1] << "\n";

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cci5z2dK.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccrVAaGU.o:crocodile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cci5z2dK.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