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 == 1 && w % 2 == 0 {
        println!("{}", h * w - w);
        for _ in 0..h-1 {
            println!("{}", vec!["1"; w].join(" "));
        }
        println!("{}", vec!["0"; w].join(" "));
    } else if h % 2 == 0 && w % 2 == 1 {
        println!("{}", h * w - h);
        for _ in 0..h {
            print!("{}", vec!["1"; w-1].join(" "));
            println!(" 0");
        }
    } else {
        println!("{}", h * w - h.max(w));
        let mut result = vec![vec!["1"; w]; h];
        for i in 0..h.min(w) {
            result[i][i] = "0";
        }
        for i in (h.min(w)..h.max(w)).step_by(2) {
            let idx = (i - h.min(w)) / 2 % h.min(w);
            if h > w {
                result[i][idx] = "0";
                result[i+1][idx] = "0";
            } else {
                result[idx][i] = "0";
                result[idx][i+1] = "0";
            }
        }
        for i in 0..h {
            println!("{}", result[i].join(" "));
        }
    }
}