import java.util.*;

public class Exercise114{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    int n = sc.nextInt();
    boolean[] dp = new boolean[1 << 15];
    dp[0] = true;
    for(int i = 0; i < n; i++){
      int a = sc.nextInt();
      for(int j = 0; j < dp.length; j++){
        if(!dp[j]){
          continue;
        }
        dp[a ^ j] = true;
      }
    }
    int answer = 0;
    for(int i = 0; i < dp.length; i++){
      if(dp[i]){
        answer++;
      }
    }
    System.out.println(answer);
  }
}