#![allow(non_snake_case)]

use std::io::{ self, prelude::* };

macro_rules! pick {
    ($tokens:expr) => {
        $tokens.next().unwrap().parse().expect("parse error")
    }
}

fn main() {
    let mut s = String::new();
    io::stdin().read_to_string(&mut s).expect("i/o error");
    let mut tokens = s.split_whitespace();

    let N: usize    = pick!(tokens);
    let A: Vec<u32> = (0..N).map(|_| pick!(tokens)).collect();

    let mut v = [false; (1<<15)+1];
    v[0] = true;

    for a in A {
        for i in 0..=(1<<15) {
            if v[i] {
                v[(a^i as u32) as usize] = true;
            }
        }
    }

    let ans = v.iter().filter(|&&x| x).count();

    println!("{}", ans);
}