B-Build the Permutation

#include
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair pii;
#define pb push_back
#define fi first
#define se second
#define mem(a,x) memset(a,x,sizeof(a));
#define db double 
#define fir(i,a,n) for(int i=a;i<=n;i++)
#define debug(x) cout<<#x<<" "<1) 
		{
			cout<<-1<n/2-1)
			{
				cout<<-1<n/2)//!!!!!!!!!
			{
				cout<<-1<n/2-1)
			{
				cout<<-1<ou) da=1;
		else if(tu