#include<bits/stdc++.h>
using namespace std;
#define endl "\n"

const int N=1e6+5,M=3005,inf=1e18;

int n,a[N],m;
vector<int> G[N];

void dfs(int dep,int l,int r){
	if(dep>n) return ;
	int mid=(l+r)>>1;
	G[dep].push_back(a[mid]);
	dfs(dep+1,l,mid-1);
	dfs(dep+1,mid+1,r);
	return ;
}

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	cin>>n;
	for(int i=1;i<=(1<<n)-1;i++) cin>>a[i];
	m=(1<<n)-1;
	dfs(1,1,m);
	for(int i=1;i<=m;i++){
		for(auto u:G[i]) cout<<u<<" ";
		cout<<endl;
	}
	return 0;
}