package no183;

import java.util.HashSet;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		for(int i=0;i<n;i++) {
			a[i] = sc.nextInt();
		}
		HashSet<Integer> hs = new HashSet<>();
		hs.add(0);
		for(int i=0;i<n;i++) {
			if (!hs.contains(a[i])) {
				HashSet<Integer> hs2 = new HashSet<>();
				for(int j:hs) {
					hs2.add(a[i] ^ j);
				}
				hs.addAll(hs2);
			}
		}
		System.out.println(hs.size());
	}
}