use std::io::{stdin, BufRead};

fn main() {
    let stdin = stdin();
    let mut stdin = stdin.lock().lines().map(Result::unwrap);
    let _n = stdin.next().unwrap().parse::<usize>().unwrap();
    let a = stdin
        .next()
        .unwrap()
        .split_whitespace()
        .map(|x| x.parse::<usize>().unwrap())
        .collect::<Vec<_>>();
    let mut dp = vec![false; 1 << 14];
    dp[0] = true;
    for &x in &a {
        let mut swp = dp.clone();
        for i in 0..1 << 14 {
            swp[i ^ x] |= dp[i];
        }
        dp = swp;
    }
    let ans = dp.iter().filter(|&&x| x).count();
    println!("{}", ans);
}