#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds;
#define getar(ar,n) for(ll i=0;i<n;++i) cin>>ar[i]
#define show(n) cout<<n<<'\n'
#define all(v) v.begin(), v.end()
#define br cout<<"\n"
#define pb push_back
#define nl '\n'
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ret return
#define ll long long
#define ld long double
#define sza(x) ((int)x.size())
const int mxN = 5000;
const ll MOD = 1e9 + 7;
const ll INF = 1e18;
const ld EPS = 1e-9;
vector<pair<ll,ll>> adj[mxN];
ll ans=INF;
vector<bool> exitt(mxN,0);
void dfs(ll u=0,ll par=-1,ll upp=0,bool seen=0){
bool leaf=0;
for(auto it:adj[u]){
if(it.first^par){
dfs(it.first,u,(!seen?upp+it.second:upp),seen||exitt[it.first]);
}
}
if(leaf&&seen){
ans=min(ans,upp);
}
}
ll travel_plan(ll n,ll m,ll r[][2],ll l[],ll k,ll p[]){
for(ll i=0;i<m;++i){
ll u=r[i][0],v=r[i][1],w=l[i];
adj[u].pb({v,w});
adj[v].pb({u,w});
}
for(ll i=0;i<k;++i) exitt[p[i]]=1;
dfs();
return ans;
}
/*int main() {
#ifndef ONLINE_JUDGE
freopen("input.in","r",stdin);
freopen("output.out","w",stdout);
#endif
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
return 0;
}*/
Compilation message
/usr/bin/ld: /tmp/ccUn3ezi.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
