#include <bits/stdc++.h>
using namespace std;
typedef long long lo;
typedef pair< lo,lo > PII;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;
lo k,flag,mx[li],maxi;
lo cev;
string s;
int n,m,l,a[li],b[li],t[li];
bool ok[li];
vector<PII> v[li];
inline void dfs(lo node,lo ata,lo der,lo basla){
for(lo i=0;i<(lo)v[node].size();i++){
lo go=v[node][i].fi;
lo co=v[node][i].se;
if(go==ata)continue;
dfs(go,node,der+co,basla);
}
if(basla==1)ok[node]=1;
mx[basla]=max(mx[basla],der);
maxi=max(maxi,mx[basla]);
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
for(int i=1;i<=m;i++){
v[A[i]].pb(mp(B[i],T[i]));
v[B[i]].pb(mp(A[i],T[i]));
}
FOR dfs(i,0,0,i);
lo mn=inf,mn1=inf;
FOR{
if(ok[i])mn=min(mn,mx[i]);
else mn1=min(mn1,mx[i]);
}
return (int)max(maxi,mn+mn1+L);
}
Compilation message
/tmp/ccpiLLq5.o: In function `main':
grader.c:(.text.startup+0xa2): undefined reference to `travelTime'
collect2: error: ld returned 1 exit status
