#include<iostream>
#include<fstream>
#include<math.h>
#include<algorithm>

using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");
int n,i,ii,j,jj,a[502][502],m,p,nr;

int main(){
    fin>>m>>n;
    for(i=1;i<=m;i++)
        for(j=1;j<=n;j++)
        {
            if(a[i][j]==0)
            {
                p=1;
                while(p+i-1<=m&&p+j-1<=n)
                    p=p*2;
                nr++;
                p=p/2;
                for(ii=i;ii<i+p;ii++)
                    for(jj=j;jj<p+j;jj++)
                        a[ii][jj]=nr;
            }
        }
    fout<<nr<<"\n";
    for(i=1;i<=m;i++)
    {
        for(j=1;j<=n;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }
    fin.close();
    fout.close();
    return 0;
}