#include "doll.h"
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<int, int> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (int i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int MOD = 1000000007;
int N,M;
void create_circuit(int m, vi A) {
A.pb(0);
N = A.size();M=m;
vi C(M + 1,0),X,Y;
vvi counters(M+1,vi());
FOR(i,0,N-1){
counters[A[i]].pb(A[i+1]);
}
// FOR(i,0,M+1){
// cout << i << " {";
// for(int j:counters[i])cout<<j << " ,";
// cout<<"}"<<endl;
// }
FOR(i,0,M+1){
if(counters[i].size() == 1){
C[i] = counters[i][0];
}else if(counters[i].size() == 2){
X.pb(counters[i][0]);
Y.pb(counters[i][1]);
C[i] = X.size()*-1;
}else if(counters[i].size() == 3){
int k = -X.size();
C[i] = k-1;
X.pb(k-2);
Y.pb(k-3);
X.pb(counters[i][0]);
Y.pb(k-1);
X.pb(counters[i][1]);
Y.pb(counters[i][2]);
}else if(counters[i].size() == 4){
int k = -X.size();
C[i] = k-1;
X.pb(k-2);
Y.pb(k-3);
X.pb(counters[i][0]);
Y.pb(counters[i][2]);
X.pb(counters[i][1]);
Y.pb(counters[i][3]);
}
}
C[0] = A[0];
// FOR(i,0,M+1)cout << C[i] << " ";
// cout << endl;
// FOR(i,0,X.size())cout << X[i] << " " << Y[i] << endl;
answer(C, X, Y);
}
