#include "rail.h"
#include<bits/stdc++.h>
using namespace std;
#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second
//#define int long long
typedef long long ll;
typedef vector<int> vi;
typedef set<int> si;
typedef multiset<int> msi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
void findLocation(int n, int first, int pos[], int tp[]) {
pos[0] = first;
tp[0] = 1;
vector<vector<int>> dis(n, vector<int>(n, -1));
auto get = [&](int x, int y) -> int {
if(x > y) swap(x, y);
if(dis[x][y] != -1) return dis[x][y];
return dis[x][y] = getDistance(x, y);
};
for(int i = 1; i < n; i++) {
if(tp[i] != 0) continue;
vector<int> lol;
for(int j = 1; j < n; j++) {
if(i == j) continue;
if(get(0, i) == get(0, j) + get(j, i)) lol.pb(j);
}
int x = first, ls = 0, k = 0;
lol.pb(i);
sort(all(lol), [&](int ii, int jj) {
return get(0, ii) < get(0, jj);
});
for(int y : lol) {
if(k) {
x -= get(ls, y);
} else {
x += get(ls, y);
}
ls = y;
k ^= 1;
pos[i] = x;
tp[i] = k + 1;
}
}
}
