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