#include<bits/stdc++.h>
#include "crocodile.h"
using namespace std;
const int MAXN=100010, INF=1000000010;
int n,m,r[MAXN][5],l[MAXN],k,p[MAXN],marc[MAXN],dist[MAXN],resp=INF;
vector<int> grafo[MAXN],peso[MAXN],d[MAXN],v;
void DKT(int s)
{
set<pair<int,int> > out;
for(int i=0;i<n;i++)
{
dist[i]=INF;
if(i==s) dist[i]=0;
out.insert(make_pair(dist[i],i));
}
while(!out.empty())
{
int cur=out.begin()->second;
out.erase(out.begin());
for(int i=0;i<grafo[cur].size();i++)
{
int viz=grafo[cur][i];
int p=peso[cur][i];
if(dist[viz]>dist[cur]+p)
{
out.erase(make_pair(dist[viz],viz));
dist[viz]=dist[cur]+p;
out.insert(make_pair(dist[viz],viz));
}
}
}
}
int travel_plan(int N,int M,int R[][5],int L[],int K,int P[])
{
n=N;
for(int i=0;i<K;i++)
marc[P[i]]=1;
for(int i=0;i<M;i++)
{
int a=R[i][0], b=R[i][1], c=L[i];
grafo[a].push_back(b); grafo[b].push_back(a);
peso[a].push_back(c); peso[b].push_back(c);
if(marc[a] && marc[b]==0) d[b].push_back(c), v.push_back(b);
if(marc[b] && marc[a]==0) d[a].push_back(c), v.push_back(a);
}
DKT(0);
for(int i=0;i<v.size();i++)
{
if(d[v[i]].size()<2) continue;
// printf("v[i] = %d dist[%d] = %d\n",i,v[i],dist[v[i]]+d[v[i]][1]);
resp=min(resp,dist[v[i]]+d[v[i]][1]);
}
return resp;
}
/*
int main ()
{
scanf("%d %d",&n,&m);
for(int i=0;i<m;i++)
scanf("%d %d",&r[i][0],&r[i][1]);
for(int i=0;i<m;i++)
scanf("%d",&l[i]);
scanf("%d",&k);
for(int i=0;i<k;i++)
scanf("%d",&p[i]);
printf("%d\n",travel_plan(n,m,r,l,k,p));
}
*/
Compilation message
crocodile.cpp: In function 'void DKT(int)':
crocodile.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<grafo[cur].size();i++)
~^~~~~~~~~~~~~~~~~~
crocodile.cpp: In function 'int travel_plan(int, int, int (*)[5], int*, int, int*)':
crocodile.cpp:56:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v.size();i++)
~^~~~~~~~~
/tmp/ccRHPNQT.o: In function `main':
grader.cpp:(.text.startup+0x2d): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status
