use std::{collections::HashMap, 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 = HashMap::new();
	n.iter()
		.for_each(|&x| *h.entry(x.abs() % 2).or_insert(0i32) += 1);
	println!("{}", (h[&0] - h[&1]).abs());
}