import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int count = (int)(Math.pow(2, 15));
        boolean[] dp = new boolean[count];
        dp[0] = true;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt();
            for (int j = 0; j < count; j++) {
                if (dp[j]) {
                    dp[j ^ a] = true;
                }
            }
        }
        int ans = 0;
        for (int i = 0; i < count; i++) {
            if (dp[i]) {
                ans++;
            }
        }
        System.out.println(ans);
    }
}