import java.io.* ;
public class football {
    public static void main(String[] args) throws Exception {
	BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) ;
	while (true) {
	    String s = br.readLine() ;
	    int n = Integer.parseInt(s) ;
	    if (n < 0)
		return ;
	    int m = 1 << n ;
	    double p[][] = new double[m][m] ;
	    double sa[][] = new double[m][1+n] ;
	    for (int i=0; i<m; i++) {
		s = br.readLine() ;
		String[] f = s.split(" ") ;
		for (int j=0; j<m; j++)
		    p[i][j] = Double.parseDouble(f[j]) ;
		sa[i][0] = 1 ;
	    }
	    int b = 0 ;
	    for (int r=0; r<n; r++) {
		b = 0 ;
		for (int i=0; i<m; i++) {
		    double ss = 0 ;
		    for (int t=1<<r; t<(2<<r); t++)
			ss += sa[t ^ i][r] * p[i][t ^ i] ;
		    sa[i][r+1] = sa[i][r] * ss ;
		    if (sa[i][r+1] > sa[b][r+1])
			b = i ;
		}
	    }
	    System.out.println(b+1) ;
	}
    }
}