#include <fstream>
using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");
int n,m,i,j,l,ic,jc,cnt,a[501][501];
int main() {
    fin>>n>>m;
    for (i=1;i<=n;i++)
        for (j=1;j<=m;j++)
            if (a[i][j]==0) {
                cnt++;
                l=1;
                while (i+2*l-1<=n && j+2*l-1<=m)
                    l*=2;
                for (ic=1;ic<=l;ic++)
                    for (jc=1;jc<=l;jc++)
                        a[i+ic-1][j+jc-1]=cnt;
            }
    fout<<cnt<<"\n";
    for (i=1;i<=n;i++) {
        for (j=1;j<=m;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }
    return 0;
}