#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e3+5;
vector<int> label(int n, int k, vector<int> u, vector<int> v){
vector<int> labels(n);
for(int i = 0; i < n; i++) labels[i] = i;
return labels;
}
int find_next_station(int s, int t, vector<int> c){
auto check = [&](int u, int end){
if(u == end) return 1;
while(end >= u){
end = (end-1)/2;
if(u == end) return 1;
}
return 0;
};
if((int)c.size() == 1){
return c[0];
} else if((int)c.size() == 2){
if(check(c[0], t)) return c[0];
return c[1];
}
if(check(c[1], t)) return c[1];
else if(check(c[2], t)) return c[2];
return c[0];
}
