use proconio::input;

fn main () {
    input! {
        _: usize,
        _: usize,
        _: usize,
        _: usize,
        _: usize,
        cx: usize,
        cy: usize,
    }
    println!("{}", 4);
    println!("{} {}", cx-1, cy);
    println!("{} {}", cx+1, cy);
    println!("{} {}", cx, cy-1);
    println!("{} {}", cx, cy+1);
}