fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let n: u128 = s.trim().parse().unwrap();

	if n == 1 || n == 4 {
		println!("{}", -1);
	} else if n % 4 == 2 {
		println!("{}", -1);
	} else{
		println!("{}", 1);
	}
}