Submission #1280448

#	Time	Username	Problem	Language	Result	Execution time	Memory
1280448		hoangtien69	Crocodile's Underground City (IOI11_crocodile)	C++20	Compilation error	0 ms	0 KiB

crocodile

#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;
const int MAXN = 1e6 + 5;
#define int long long
#define pii pair<int,int>
const int INF = 1e18;

int n, m, k;
pii R[MAXN];
int L[MAXN];
vector<int> P;
vector<pii> adj[MAXN];
int d[MAXN][2];

void dijkstra()
{
    for (int i = 0; i <= n; i++)
    {
        d[i][0] = d[i][1] = INF;
    }
    priority_queue<pii, vector<pii>, greater<pii>> pq;

    for (int u : P)
    {
        d[u][0] = 0;
        d[u][1] = 0;
        pq.push({0, u});
    }
    while(!pq.empty())
    {
        auto[dist, u] = pq.top();
        pq.pop();

        if (dist > d[u][1]) continue;

        for (auto [v, w] : adj[u])
        {
            int new_dist = dist + w;

            if (d[v][0] > new_dist)
            {
                if (d[v][1] != d[v][0])
                {
                    d[v][1] = d[v][0];
                    pq.push({d[v][1], v});
                }
                d[v][0] = new_dist;
            }
            else if (d[v][1] > new_dist)
            {
                d[v][1] = new_dist;
                pq.push({d[v][1], v});
            }
        }
    }
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> m >> k;
    for (int i = 1; i <= m; i++)
    {
        cin >> R[i].first >> R[i].second >> L[i];
    }
    for (int i = 1; i <= k; i++)
    {
        int u;
        cin >> u;
        P.push_back(u);
    }
    for (int i = 1; i <= m; i++)
    {
        int u = R[i].first;
        int v = R[i].second;
        int w = L[i];
        adj[u].push_back({v, w});
        adj[v].push_back({u, w});
    }
    dijkstra();
    cout << d[0][1];
}

Compilation message (stderr)

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