use std::collections::HashSet;

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: HashSet<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut result: Vec<bool> = vec![false; 2usize.pow(15u32)];
    let mut checked: HashSet<usize> = HashSet::new();
    result[0] = true;
    checked.insert(0);
    for v in a.iter() {
        for i in checked.iter() {
            let val = v ^ i;
            result[val] = true;
        }
        checked = result.iter().enumerate().filter(|pair| *pair.1).map(|pair| pair.0).collect();
    }
    println!("{}", result.iter().filter(|&&flg| flg).count());
}