#include<fstream>
using namespace std;
ifstream f("piese.in");
ofstream g("piese.out");
int v[510][510],n,m,k,t,i,j,nr;
void put();
void fill(int xi,int yi,int xf,int yf);
int main()
{
    f>>n>>m;
    t=1;
    k=min(n,m);
    while(t*2<=k)
        t*=2;
    for(;t>=1;t>>=1)
    {
        put();
    }
    g<<nr<<"\n";
    for(i=1;i<=n;++i)
    {
        for(j=1;j<=m;++j)
            g<<v[i][j]<<" ";
        g<<"\n";
    }
    return 0;
}
void put()
{
    for(i=1;i<=n;++i)
        for(j=1;j<=m;++j)
        {
            if(i+t-1>n||j+t-1>m)
                break;
            if(v[i][j]==0&&v[i+t-1][j+t-1]==0)
            {
                nr++;
                fill(i,j,i+t-1,j+t-1);
            }
        }
}
void fill(int xi,int yi,int xf,int yf)
{
    for(int i=xi;i<=xf;++i)
        for(int j=yi;j<=yf;++j)
            v[i][j]=nr;
}