#include <fstream>

using namespace std;

ifstream fin("piese.in");
ofstream fout("piese.out");
int m,n,piese,ii,jj,a[510][510],lat;
int main()
{
    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=lat*2;
                for(ii=0;ii<lat;ii++)
                    for(jj=0;jj<lat;jj++)
                        a[ii+i][jj+j]=piese;
        }
    fout<<piese<<"\n";
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }


}