#include <bits/stdc++.h>
#include "crocodile.h"
using namespace std;
vector<int> par;
vector<vector<pair<int, int>>> adj;
vector<int> dist, dist2;
set<int> exits;
const int INF = 2e9+5;
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
par.resize(N);
adj.resize(N);
dist.assign(N, INF);
dist2.assign(N, INF);
for(int i = 0; i < M; ++i) {
int u = R[i][0], v = R[i][1];
int w = L[i];
adj[u].push_back({v, w});
adj[v].push_back({u, w});
}
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> q;
for(int i = 0; i < K; ++i) {
q.push({0, P[i]});
dist[P[i]] = 0;
exits.insert(P[i]);
}
while(!q.empty()) {
auto[cur_weight, u] = q.top(); q.pop();
if(cur_weight != dist[u]) continue;
for(auto[v, w] : adj[u]) {
if(dist[u] + w < dist[v]) {
dist[v] = dist[u] + w;
q.push({dist[v], v});
par[v] = u;
}
}
}
vector<int> idx(N);
iota(idx.begin(), idx.end(), 0);
sort(idx.begin(), idx.end(), [&](int a, int b) { return dist[a] < dist[b]; });
vector<int> f(N, INF);
for(int u : idx) {
if(dist[u] == 0) {
f[u] = 0;
continue;
}
multiset<int> cand;
for(auto [v,w] : adj[u]){
if(dist[v] < dist[u]){
cand.insert(f[v] + w);
}
}
if((int)cand.size() < 2) {
f[u] = INF;
continue;
}
auto it = cand.begin();
++it;
f[u] = *it;
}
return f[0];
}
