#include "doll.h"
#include <vector>
#include <stdio.h>
using namespace std;
int con[1000005]={0};
int This[1000005]={0};
int m[1000005];
int n[1000005];
vector < int > C,x,y;
int X[1000005];
int Y[1000005];
void create_circuit(int M, vector < int > A)
{
int N=A.size(),now=1,i;
C.push_back(A[0]);
for(i=1;i<=M;i++) C.push_back(i);
for(i=0;i<N;i++) con[A[i]]++;
A.push_back(0);
for(i=0;i<N;i++)
{
if(con[A[i]]==1) C[A[i]]=A[i+1];
else if(con[A[i]]==2)
{
if(This[A[i]]==0)
{
C[A[i]]=-(now);
X[now]=A[i+1];
now++;
}
else Y[-C[A[i]]]=A[i+1];
This[A[i]]++;
}
else if(con[A[i]]==4)
{
//printf("%d %d %d\n",i,A[i],This[A[i]]);
if(This[A[i]]==0)
{
C[A[i]]=-now;
X[now]=-(now+1);
Y[now]=-(now+2);
now+=3;
m[A[i]]=X[-C[A[i]]];
n[A[i]]=Y[-C[A[i]]];
//printf("a:%d %d\n",m[A[i]],n[A[i]]);
X[-m[A[i]]]=A[i+1];
}
else if(This[A[i]]==1) Y[-m[A[i]]]=A[i+1];
else if(This[A[i]]==2) X[-n[A[i]]]=A[i+1];
else if(This[A[i]]==3) Y[-n[A[i]]]=A[i+1];
This[A[i]]++;
}
else
{
//printf("%d %d %d\n",i,A[i],This[A[i]]);
if(This[A[i]]==0)
{
C[A[i]]=-now;
X[now]=-(now+1);
Y[now]=-(now+2);
now+=3;
m[A[i]]=X[-C[A[i]]];
n[A[i]]=Y[-C[A[i]]];
X[-m[A[i]]]=A[i+1];
Y[-m[A[i]]]=A[i];
}
//else if(This[A[i]]==1) Y[-m[A[i]]]=A[i+1];
else if(This[A[i]]==1) X[-n[A[i]]]=A[i+1];
else if(This[A[i]]==2) Y[-n[A[i]]]=A[i+1];
This[A[i]]++;
}
}
//for(auto i:C) printf("%d\n",i);
//for(i=1;i<now;i++) printf("%d %d\n",X[i],Y[i]);
for(i=1;i<now;i++) x.push_back(X[i]);
for(i=1;i<now;i++) y.push_back(Y[i]);
answer(C,x,y);
}
