fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let mut s: u64 = s.trim().parse().unwrap();
	let mut v = vec![];
	while s > 0 {
		let mut i = (s as f64).sqrt() as u64;
		while s < i * i {
			i -= 1;
		}
		s -= i * i;
		v.push(i * i);
	}
	println!(
		"{}\n{}",
		v.len(),
		v.iter()
			.map(|x| x.to_string())
			.collect::<Vec<_>>()
			.join(" ")
	)
}