use std::io::*;

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let a: Vec<usize> = (0..n)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let mut dp: Vec<bool> = vec![false; 1 << 15];
    dp[0] = true;
    for i in 0..n {
        for j in (0..1 << 15).rev() {
            dp[j ^ a[i]] |= dp[j];
        }
    }

    let mut ans = 0;
    for i in 0..1 << 15 {
        ans += dp[i] as usize;
    }
    println!("{}", ans);
}