import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.PriorityQueue;
import java.util.Scanner;

public class Main {
	
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		
		PriorityQueue<Long> queue = new PriorityQueue<Long>(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);
	}
	
}