#include <fstream>
using namespace std;
int n, m, pas, v[510][510];
int main(){
    ifstream fin("piese.in");
    ofstream fout("piese.out");
    fin >> n >> m;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            if (v[i][j] == 0) {
                pas++;
                int lg = 1;
                while (i + lg * 2 - 1 <= n && j + lg * 2 - 1 <= m) {
                    lg *= 2;
                }
                for (int i2 = i; i2 <= i + lg - 1; i2++) {
                    for (int j2 = j; j2 <= j + lg - 1; j2++) {
                        v[i2][j2] = pas;
                    }
                }
            }
        }
    }
    fout << pas << "\n";
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            fout << v[i][j] << " ";
        }
        fout << "\n";
    }


    return 0;
}