#include "doll.h"
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ff first
#define ss second

const int maxn = 1e6 + 10;

int n, s, a[maxn], pw, l;
vector <int> X, Y;
vector <int> c;
map <int, int> lf, rg;

void get(int v, int tl, int tr) {
	int tm = (tl + tr) / 2;
	if (tm <= l) {
		lf[v] = -1;
	}
	if (tm + 1 == tr) {
		rg[v] = a[tr];
	} else {
		s--;
		rg[v] = s;
		get(s, tm + 1, tr);
	}
	if (tl == tm && lf[v] == 0) {
		lf[v] = a[tl];
	} else {
		if (lf[v] == 0) {
			s--;
			lf[v] = s;
			get(s, tl, tm);
		}
	}
}

void create_circuit(int M, std::vector<int> A) {
	n = A.size();
	pw = 2;
	while(pw < n) {
		pw *= 2;
	}
	while(l + n < pw) {
		l++;
		a[l] = -1;
	}
	int id = l + 1;
	for (int i = 0; i < n; i++) {
		if (i % 2 == 0) {
			a[id] = A[i];
			id++;
		}
	}
	for (int i = 0; i < n; i++) {
		if (i % 2 != 0) {
			a[id] = A[i];
			id++;
		}
	}
	s = -1;
	get(-1, 1, pw);
	for (int i = 0; i < n - 1; i++) {
		c.push_back(-1);
	}
	c.push_back(0);
	for (int i = -1; i >= s; i--) {
		X.push_back(lf[i]);
		Y.push_back(rg[i]);
	}
	answer(c, X, Y);
}