#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> e[1010];
int lb[1010],cnt;
void dfs(int now,int last,int lv){
if(lv==1){
lb[now]=cnt;
cnt++;
}
for(auto x:e[now]){
if(x==last)continue;
dfs(x,now,lv^1);
}
if(lv==0){
lb[now]=cnt;
cnt++;
}
return;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
cnt=0;
for(int i=0;i<n;i++)e[i].clear();
for(int i=0;i<n-1;i++)e[u[i]].push_back(v[i]),e[v[i]].push_back(u[i]);
dfs(0,0,0);
vector<int> labels(n);
for (int i = 0; i < n; i++) {
labels[i] = lb[i];
//cerr<<lb[i]<<" ";
}
//cerr<<"\n";
return labels;
}
int find_next_station(int s, int t, vector<int> c) {
if(s>c.back()){
if(t>s)return c[0];
if(t<=c[0])return c[0];
int ps=upper_bound(c.begin(),c.end(),t)-c.begin()-1;
return c[ps];
}else{
if(t<s)return c.back();
if(t>c.back())return c.back();
int ps=lower_bound(c.begin(),c.end(),t)-c.begin();
return c[ps];
}
}
