#include <fstream>

using namespace std;

ifstream in("piese.in");
ofstream out("piese.out");
int n, m, ans;
int v[505][505];

void umpl(int istart, int jstart, int lat)
{
    for(int i = istart; i<=istart + lat - 1; i++)
    {
        for(int j = jstart; j<=jstart + lat - 1; j++)
        {
            v[i][j] = ans;
        }
    }
}

int main()
{
    in>>n>>m;

    int lat;
    for(int i = 1; i<=n; i++)
    {
        for(int j = 1; j<=m; j++)
        {
            if(v[i][j] == 0)
            {
                ans++;
                lat = 1;

                while(i + lat - 1 <= n && j + lat - 1 <= m)
                {
                    lat *= 2;
                }
                lat /= 2;

                umpl(i, j, lat);
            }
        }
    }

    out<<ans<<'\n';

    for(int i = 1; i<=n; i++)
    {
        for(int j = 1; j<=m; j++)
        {
            out<<v[i][j]<<" ";
        }
        out<<'\n';
    }

    return 0;
}