import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;

public class No183 {
    public static void main(String[] args) {

        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    System.in));
            int N = Integer.parseInt(br.readLine());
            String[] Aarray = br.readLine().split(" ");
            int[] Ai = new int[N];
            for (int i = 0; i < N; i++) {
                Ai[i] = Integer.parseInt(Aarray[i]);
            }
            Set<Long> set = new HashSet<Long>();
            knapsack(Ai, 0, set, 0);
            System.out.println(set.size());

        } catch (Exception e) {
            System.err.println("Error:" + e.getMessage());
        }
    }

    static void knapsack(int[] Ai, long XORSum, Set<Long> set, int n) {
        if (n == Ai.length) {
            return;
        }
        set.add(XORSum);
        knapsack(Ai, XORSum ^ Ai[n], set, n + 1);
        knapsack(Ai, XORSum, set, n + 1);
    }

}