#[allow(unused_macros)]
macro_rules! read {
    ([$t:ty] ; $n:expr) =>
        ((0..$n).map(|_| read!([$t])).collect::<Vec<_>>());
    ($($t:ty),+ ; $n:expr) =>
        ((0..$n).map(|_| read!($($t),+)).collect::<Vec<_>>());
    ([$t:ty]) =>
        (rl().split_whitespace().map(|w| w.parse().unwrap()).collect::<Vec<$t>>());
    ($t:ty) =>
        (rl().parse::<$t>().unwrap());
    ($($t:ty),*) => {{
        let buf = rl();
        let mut w = buf.split_whitespace();
        ($(w.next().unwrap().parse::<$t>().unwrap()),*)
    }};
}

#[allow(dead_code)]
fn rl() -> String {
    let mut buf = String::new();
    std::io::stdin().read_line(&mut buf).unwrap();
    buf.trim_end().to_owned()
}

fn main() {
    let _n = read!(usize);
    let a_vec = read!([usize]);

    let mut now  = vec![false; 1 << 15];
    let mut next = vec![false; 1 << 15];

    now[0] = true;
    for e in a_vec {
        // now[i]はeより前の要素のみでiが作れるか否か
        // next[i]がそこにeを加えて作れるものを指すように更新
        for i in 0..now.len() {
            next[i ^ e] = now[i];
        }

        for i in 0..now.len() {
            now[i] |= next[i]
        }
    }
    
    let ans = now
        .into_iter()
        .filter(|&e| e)
        .count();

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