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