use std::io::Read;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_to_string(&mut s).ok();
	let n: Vec<i32> =
		s.split_whitespace().skip(1).flat_map(str::parse).collect();
	let mut h = [0i32, 0];
	n.iter().for_each(|&x| h[x.abs() as usize % 2] += 1);
	println!("{}", (h[0] - h[1]).abs());
}