#include "stations.h"
//#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using arr = array<int, 2>;
using arrr = array<int, 3>;
constexpr int maxn = 1e3;
vector <int> output;
int t;
void dfs(const vector<vector<int>> &adj, int p, int par)
{
output[p] = t++;
for (int i : adj[p])
{
if (i == par) continue;
dfs(adj, i, p);
}
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
vector<vector<int>> adj(n);
for (int i = 0; i < n - 1; i++)
{
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
int start = -1;
t = 0;
for (int i = 0; i < n; i++) {
if (adj[i].size() == 1ull) {
start = i;
break;
}
}
output.assign(n, 0);
dfs(adj, start, -1);
return output;
}
int find_next_station(int s, int T, std::vector<int> c) {
if (c.size() == 1ull) return c.front();
if (T < c.front()) return c.front();
auto it = upper_bound(c.begin(), c.end(), T) - 1;
return *it;
}
