import java.util.*;

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