#include<bits/stdc++.h>
using namespace std;
const int N=300;
int a[N],b[N],c[N],d[N],n;
int main(){
	int m;
	scanf("%d",&m);
	n=1<<m;
	for(int i=1;i<=n;i++){
		scanf("%d",&a[i]);
		d[i]=i;
	}
	while(1){
		int p=0;
		for(int i=1;i<=n;i+=2){
			b[++p]=max(a[i],a[i+1]);
			if(a[i]>a[i+1]){
				c[p]=d[i];
			}else{
				c[p]=d[i+1];
			}
		}
		for(int i=1;i<=p;i++){
			a[i]=b[i];
			d[i]=c[i];
		}
		if(n==4){
			if(a[1]>a[2]){
				printf("%d\n",c[2]);
				return 0;
			}else{
				printf("%d\n",c[1]);
				return 0;
			}
		}
		n/=2;
	}
	return 0;
}