#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;

#define Int register int
#define MAXN 130

int n;
double f[MAXN][MAXN],p[MAXN][MAXN];

void read (int &x)
{
	x = 0;char c = getchar();int f = 1;
	while (c < '0' || c > '9'){if (c == '-') f = -f;c = getchar();}
	while (c >= '0' && c <= '9'){x = (x << 3) + (x << 1) + c - '0';c = getchar();}
	x *= f;return ;
}

void write (int x)
{
	if (x < 0){x = -x;putchar ('-');}
	if (x > 9) write (x / 10);
	putchar (x % 10 + '0');
}

signed main()
{
	while (1)
	{
		read (n);
		if (n == -1) return 0;
		memset (f,0,sizeof (f));
		for (Int i = 1;i <= (1ll << n);++ i)
			for (Int j = 1;j <= (1ll << n);++ j)
				scanf ("%lf",&p[i][j]);
		for (Int i = 1;i <= (1ll << n);++ i) f[0][i] = 1.0;
		for (Int i = 1;i <= n;++ i)
			for (Int j = 1;j <= (1ll << n);++ j)
				for (Int k = 1;k <= (1ll << n);++ k)
					if (((j - 1 >> i - 1) ^ 1) == (k - 1 >> i - 1)) f[i][j] = f[i][j] + f[i - 1][j] * f[i - 1][k] * p[j][k];
		double maxn = -1;int id = 0; 
		for (Int i = 1;i <= (1ll << n);++ i)
			if (f[n][i] > maxn)
			{
				maxn = f[n][i];
				id = i;
			}
		write (id),putchar ('\n');
	}
	return 0;
}