#include "stations.h"
#include<bits/stdc++.h>
#define fi first
#define se second
#define FOR(i, k, n) for(int i = k; i <= n; i++)
#define FOR1(i, k, n) for(int i = k; i >= n; i--)
#define pb push_back
#define fastio ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define vi vector<int>
#define pii pair<int, int>
#define vii vector<pii>
#define ll long long
#define vll vector<ll>
#define pll pair<ll, ll>
#define re return 0
#define mii map<int, int>
#define input "ALONE.inp"
#define output "ALONE.out"
#define rf freopen(input, "r", stdin); freopen(output, "w", stdout)
using namespace std;
const int maxn = 1e4 + 5;
const int mod = 1e9 + 7;
const int base = 998244353;
const int base1 = 31;
const int SZ = 320;
const ll INF = 1e18;
void add(int &a, int b)
{
a += b;
if(a >= mod) a -= mod;
if(a < 0) a += mod;
}
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r)
{
return uniform_int_distribution<int>(l, r) (rd);
}
static int max_label = 0;
static int r, n, k, q;
static std::vector<int> u, v, labels, answers;
static std::map<int, int> reverse_labels;
static std::vector<std::vector<int>> adjlist;
static int s, t, w;
static std::vector<int> c;
int depth[1005];
vi adj[1005];
int cnt;
vi ID;
void DFS(int u, int par)
{
if(depth[u] % 2 == 0)
ID[u] = cnt++;
for(auto v : adj[u])
{
if(v == par)
continue;
depth[v] = depth[u] + 1;
DFS(v, u);
}
if(depth[u] % 2 == 1)
ID[u] = cnt++;
}
vi label(int n, int k, vi u, vi v) {
FOR(i, 0, n - 1)
adj[i].clear();
cnt = 0;
ID.resize(n);
FOR(i, 0, u.size() - 1)
{
adj[u[i]].pb(v[i]);
adj[v[i]].pb(u[i]);
}
depth[0] = 0;
DFS(0, -1);
return ID;
}
int find_next_station(int s, int t, vi c) {
if(s < c[0])
{
sort(c.begin(), c.end());
if(t < s || t > c.back())
return c.back();
int res = lower_bound(c.begin(), c.end(), t) - c.begin();
return c[res];
}
else
{
sort(c.begin(), c.end(), greater<int>());
if(t > s || t < c[0])
return c[0];
int res = upper_bound(c.begin(), c.end(), t) - c.begin() - 1;
return c[res];
}
}
