//
// Created by 86185 on 2023/11/25.
//
#include<bits/stdc++.h>
using namespace std;
//#define int long long
int n;
struct point {
    int num;
    int data;
}v[999];
vector<point>a[500];
signed main()
{
    cin>>n;
    for(int i=1;i<=int (1<<n);i++)
    {
        cin>>v[i].data;
        v[i].num=i;
        if(i%2==0)
        {
            a[1].push_back((v[i].data>v[i-1].data?v[i]:v[i-1]));
        }
    }
    int k=1;
    while(a[k].size()!=1)
    {
        //auto u=a[k].size();
        k++;
        for(int i=1;i<a[k-1].size();i+=2)
        {
                a[k].push_back((a[k-1][i].data>a[k-1][i-1].data?a[k-1][i]:a[k-1][i-1]));
        }
    }
    cout<<(a[k-1][0].data>a[k-1][1].data?a[k-1][1].num:a[k-1][0].num);
}