fn main() {
    let mut input = String::new();
    std::io::Read::read_to_string(&mut std::io::stdin(), &mut input).ok();
    let input: Vec<i64> = input
        .split_whitespace()
        .map(|n| n.parse().unwrap())
        .collect();

    let n_even = input[1..].iter().filter(|n| n.rem_euclid(2) == 0).count();
    let n_odd = input[1..].len() - n_even;

    println!("{:?}", n_even.abs_diff(n_odd));
}