#include <fstream>

using namespace std;
int a[510][510];
int n, m, lat, piese;
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 (a[i][j] == 0) {
                piese ++;
                lat = 1;
                while (i+2*lat-1 <= n && j+2*lat-1 <= m)
                    lat *= 2;
                for (int ii=0;ii<lat;ii++)
                    for (int jj=0;jj<lat;jj++)
                        a[i+ii][j+jj] = piese;
            }
    fout<<piese<<"\n";
    for (int i=1;i<=n;i++) {
        for (int j=1;j<=m;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }
    return 0;
}