fn main() {
    let mut s = {
        let mut line = String::new();
        std::io::stdin().read_line(&mut line).unwrap();
        line.trim().parse::<usize>().unwrap()
    };

    let mut aa = vec![];
    while s != 0 {
        let sqrt_a = (2_usize..).find(|&a| a.pow(2) > s).unwrap() - 1;
        aa.push(sqrt_a.pow(2));
        s -= sqrt_a.pow(2);
    }

    println!("{}", aa.len());
    println!(
        "{}",
        aa.iter()
            .map(|a| a.to_string())
            .collect::<Vec<String>>()
            .join(" ")
    );
}