import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		boolean[] cur = new boolean[1 << 15];
		boolean[] next = new boolean[1 << 15];
		cur[0] = true;
		for (int i = 0; i < n; i++) {
		    int a = sc.nextInt();
		    for (int j = 0; j < (1 <<15); j++) {
		        if (cur[j]) {
		            next[j] = true;
		            next[j ^ a] = true;
		        }
		    }
		    boolean[] tmp = next;
		    next = cur;
		    cur = tmp;
		    Arrays.fill(next, false);
		}
		int count = 0;
		for (boolean b : cur) {
		    if (b) {
		        count++;
		    }
		}
		System.out.println(count);
	}
}