fn main() {
    let mut hw = String::new();
    std::io::stdin().read_line(&mut hw).ok();
    let hw: Vec<usize> = hw.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let h = hw[0];
    let w = hw[1];

    if h % 2 == 0 && w % 2 == 0 {
        println!("{}", h*w);
        for _ in 0..h { println!("{}", vec!["1"; w].join(" ")); }
    } else if h % 2 == 0 {
        println!("{}", h * (w-1));
        for _ in 0..h {
            println!("{} 0", vec!["1"; w-1].join(" "));
        }
    } else if w % 2 == 0 {
        println!("{}", (h-1)*w);
        for _ in 0..h-1 { println!("{}", vec!["1"; w].join(" ")); }
        println!("{}", vec!["0"; w].join(" "));
    } else {
        println!("{}", (h.min(w) - 1) * h.max(w));
        let mut ret = vec![vec![1usize; w]; h];
        for i in 0..h.min(w) { ret[i][i] = 0; }
        for i in 0..h.max(w) {
            let mut idx = 0usize;
            if h > w {
                for j in (w..h).step_by(2) {
                    ret[j][idx] = 0;
                    ret[j+1][idx] = 0;
                    idx = (idx + 1) % w;
                }
            } else {
                for j in (h..w).step_by(2) {
                    ret[idx][j] = 0;
                    ret[idx][j+1] = 0;
                    idx = (idx + 1) % h;
                }
            }
        }
        for i in 0..h {
            println!("{}", ret[i].iter().map(|v| v.to_string()).collect::<Vec<String>>().join(" "));
        }
    }
}