#include <fstream>
using namespace std;
ifstream fin ("piese.in");
ofstream fout("piese.out");
int n,m,a[501][501],P,i1,j1,nr,i,j;
int main()
{
    fin>>n>>m;
    nr=0;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
        {
            if(a[i][j]==0)
            {
                nr++;
                P=512;
                while(i+P-1>n||j+P-1>m)
                    P=P/2;
                for(i1=i;i1<=P+i-1;i1++)
                {
                    for(j1=j;j1<=P+j-1;j1++)
                        a[i1][j1]=nr;
                }
            }
        }
    }
    fout<<nr<<"\n";
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }
}