use std::mem::swap;

use proconio::input;

fn main() {
    input! {
        mut h: usize,
        mut w: usize,
    }
    if h % 2 == 0 && w % 2 == 0 {
        if h.min(w) <= 4 {
            let mut swaped = false;
            if w < h {
                swap(&mut h, &mut w);
                swaped = true;
            }
            let mut c = vec![vec![0; w]; h];
            for i in 0..h {
                for j in 0..w {
                    c[i][j] = (i + 1) / 2 + 1;
                }
            }
            println!("{}", h / 2 + 1);
            for i in (0..h).step_by(2) {
                for j in 0..w {
                    if !swaped {
                        println!(
                            "{} {} {} {} {} {}",
                            i + 1,
                            j + 1,
                            c[i][j],
                            i + 2,
                            j + 1,
                            c[i + 1][j]
                        );
                    } else {
                        println!(
                            "{} {} {} {} {} {}",
                            j + 1,
                            i + 1,
                            c[i][j],
                            j + 1,
                            i + 2,
                            c[i + 1][j]
                        );
                    }
                }
            }
        } else {
            println!("4");
            for i in 1..=h {
                println!("{} {} {} {} {} {}", i, 1, 1, i, 2, 2);
                println!("{} {} {} {} {} {}", i, w - 1, 3, i, w, 4);
            }
            for i in (1..=h).step_by(2) {
                for j in 3..=w - 2 {
                    println!("{} {} {} {} {} {}", i, j, 2, i + 1, j, 3);
                }
            }
        }
    }
}