Submission #1187983

#	Time	Username	Problem	Language	Result	Execution time	Memory
1187983		pxsit	Crocodile's Underground City (IOI11_crocodile)	C++20	Compilation error	0 ms	0 KiB

crocodile

#include <bits/extc++.h>
using namespace std;
typedef long long ll;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    int n,m,k;
    cin>>n>>m>>k;
    vector<vector<pair<int,ll>>> g(n);
    for(int i=0;i<m;i++){
        int u,v; ll w;
        cin>>u>>v>>w;
        g[u].emplace_back(v,w);
        g[v].emplace_back(u,w);
    }
    const ll INF = 4e18;
    vector<ll> b1(n,INF), b2(n,INF), f(n,INF);
    priority_queue<pair<ll,int>, vector<pair<ll,int>>, greater<pair<ll,int>>> pq;
    for(int i=0;i<k;i++){
        int p; cin>>p;
        b1[p]=0;
        f[p]=0;
        pq.emplace(0,p);
    }
    while(!pq.empty()){
        auto [d,u]=pq.top(); pq.pop();
        if(d!=f[u]) continue;
        if(u==0) break;
        for(auto &e:g[u]){
            int v=e.first;
            ll nc=d+e.second;
            ll old2=b2[v];
            if(nc<b1[v]){
                b2[v]=b1[v];
                b1[v]=nc;
            } else if(nc<b2[v]){
                b2[v]=nc;
            } else continue;
            if(b2[v]<f[v] && b2[v]<INF){
                f[v]=b2[v];
                pq.emplace(f[v],v);
            }
        }
    }
    cout<<f[0]<<"\n";
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccl3JlGK.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccq1QWBz.o:crocodile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccl3JlGK.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