#include <fstream>
#include <iostream>
#define VAL 500

using namespace std;

ifstream f("piese.in");
ofstream g("piese.out");

int n, m, sol[VAL+10][VAL+10], nr;

void umple(int i1, int j1, int i2, int j2, int nr)
{   for(int i=i1; i<=i2; i++)
        for(int j=j1; j<=j2; j++) sol[i][j] = nr;
}

int main()
{
    f >> n >> m;
    for(int i=1; i<=n; i++)
        for(int j=1; j<=m; j++)
            if(!sol[i][j])
                {   int put2 = 1;
                    while(i+put2-1 <= n && j+put2-1 <= m) put2 = put2 * 2;
                    put2 /= 2;
                    umple(i, j, i+put2-1, j+put2-1, ++nr);
                }
    g << nr << '\n';
    for(int i=1; i<=n; i++)
        {   for(int j=1; j<=m; j++) g << sol[i][j] << ' ';
            g << '\n';
        }
    return 0;
}