import java.util.*;

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();
    }
    int[][] dp = new int[N][(int)Math.pow(2, 15)];
    dp[0][0] = 1;
    dp[0][a[0]] = 1;
    for(int i = 1; i < N; i++) {
      for(int j = 0; j < (int)Math.pow(2, 15); j++) {
        if(dp[i - 1][j] == 1 || dp[i - 1][j ^ a[i]] == 1) dp[i][j] = 1;
      }
    }
    int ans = 0;
    for(int j = 0; j < (int)Math.pow(2, 15); j++) {
      if(dp[N - 1][j] > 0) ans++;
    }
    System.out.println(ans);
  }
}