use std::mem::swap;

use proconio::input;

fn main() {
    input! {
        mut h: usize,
        mut w: usize,
    }
    if h % 2 == 0 && w % 2 == 0 {
        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]
                    );
                }
            }
        }
    }
}