#pragma GCC optimize("O0")
#include "stations.h"
using namespace std;
vector<int> adj[1004];
vector<int> labels;
int cnt = 0;
int dfs(int nn) {
if (labels[nn] != 10000) return 0;
labels[nn] = cnt++;
for (auto &ii : adj[nn]) dfs(ii);
return 0;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
for (int i=0; i<n; i++) adj[i].clear();
labels.resize(n, 10000);
for (int i=0; i<n-1; i++) {
adj[u[i]].emplace_back(v[i]);
adj[v[i]].emplace_back(u[i]);
}
for (int i=0; i<n; i++) {
if (adj[i].size() == 1) { dfs(i); return labels;}
}
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
if (s < t) return s+1;
else return s-1;
}
