fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>().split_whitespace()
        .map(|e| e.parse().ok().unwrap()).collect()
}

fn main() {
    let _: usize = read();
    let bs: Vec<usize> = read_vec();

    /*
    let mut dp = std::collections::HashSet::new();
    dp.insert(0);
    for b in bs {
        let mut results = std::collections::HashSet::new();
        for num in &dp {
            let result = num ^ b;
            results.insert(result);
        }
        for result in results {
            dp.insert(result);
        }
    }
    println!("{:?}", dp.len());
    */

    let mut dp = [false; 32768];
    dp[0] = true;
    for b in bs {
        for i in 0..32768 {
            if dp[i] {
                dp[i ^ b] = true;
            }
        }
    }
    let mut ans = 0;
    for i in 0..32768 {
        if dp[i] {
            ans += 1;
        }
    }
    println!("{:?}", ans);
}