use std::str::FromStr;
use std::{io::*, vec};
fn main() {
	let n: usize = read();
	let mut a = vec![0; n];
	for _i in &mut a {
		*_i = read();
	}
	let mut dp = vec![false; 32768];
	dp[0] = true;
	for _i in 0..n {
		let mut next_dp = dp.clone();
		for _j in 0..32768 {
			if dp[_j] {
				next_dp[_j ^ a[_i]] = true;
			}
		}
		dp = next_dp;
	}
	println!("{}", dp.iter().filter(|&&x| x).count());
}

pub fn read<T: FromStr>() -> T {
	let stdin = stdin();
	let stdin = stdin.lock();
	let token: String = stdin
		.bytes()
		.map(|c| c.expect("failed to read char") as char)
		.skip_while(|c| c.is_whitespace())
		.take_while(|c| !c.is_whitespace())
		.collect();
	token.parse().ok().expect("failed to parse token")
}