#include <bits/stdc++.h>

using namespace std;

int putere, pas, n, a[520][520];

void f(int i, int j, int k)
{
    if(k==1)
    {
        printf("%d %d ",a[i][j],a[i+1][j+1]);
        printf("%d %d ",a[i][j+1],a[i+1][j]);
    }
    else if(k>1)
    {
        f(i,j,k/2);
        f(i+k,j+k,k/2);
        f(i,j+k,k/2);
        f(i+k,j,k/2);
    }
}

int main()
{
    freopen("matrice_div_et_imp.in","r",stdin);
    freopen("matrice_div_et_imp.out","w",stdout);
    scanf("%d",&putere);
    if(putere==0)
    {
        scanf("%d",&pas);
        printf("%d",pas);
        return 0;
    }
    n=(1<<putere);
    pas=(n>>1);
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++) scanf("%d",&a[i][j]);
    f(1,1,pas);
    return 0;
}