import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.PriorityQueue;
import java.util.Scanner;
import java.util.StringTokenizer;

public class Main {
	
	public static void main(String[] args) throws IOException{
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		
		PriorityQueue<Long> queue = new PriorityQueue<Long>(N, Collections.reverseOrder());
		for(int i = 0; i < N; i++){
			queue.add(sc.nextLong());
		}
		
		while(!queue.isEmpty()){
			final long value = queue.poll();
			
			if(value == 0){
				queue.add(value);
				break;
			}else{
				final long min = Long.highestOneBit(value);
			
				while(!queue.isEmpty()){
					final long next_value = queue.poll();
					
					if((next_value & min) != 0){
						queue.add(next_value ^ value);
					}else{
						queue.add(next_value);
						break;
					}
				}
			}
		}
	
		
		final int rank = N - queue.size();
		System.out.println(1l << rank);
	}
	
	public static class Scanner {
	    private BufferedReader br;
	    private StringTokenizer tok;

	    public Scanner(InputStream is) throws IOException {
	        br = new BufferedReader(new InputStreamReader(is));
	    }

	    private void getLine() throws IOException {
	        while (!hasNext()) { tok = new StringTokenizer(br.readLine()); }
	    }

	    private boolean hasNext() {
	        return tok != null && tok.hasMoreTokens();
	    }

	    public String next() throws IOException {
	        getLine(); return tok.nextToken();
	    }

	    public int nextInt() throws IOException {
	        return Integer.parseInt(next());
	    }
	    
	    public long nextLong() throws IOException {
	    	return Long.parseLong(next());
	    }
	    
	    public void close() throws IOException {
	        br.close();
	    }
	}
	
}