#include <fstream>
using namespace std;
ifstream fin("piese.in");
ofstream fout("piese.out");

int m,n,i,j,x,y,i2,j2;
int a[502][502];
int nop;

int main(){


    fin >> m >> n;
    for (i = 1; i <= m; ++i)
        for (j = 1; j <= n; ++j)
            if (a[i][j] == 0){
                ++x;

                y= 1;
                while (i+(y<< 1)-1<= m && j +(y<< 1)-1<=n)
                    y<<= 1;

                for (i2 = i; i2 <= i + y - 1; ++i2)
                    for (j2 = j; j2 <= j + y - 1; ++j2)
                        a[i2][j2] = x;
            }

    fout << n;
    for (int i = 1; i <= m; ++i){
        fout <<endl;
        for (j = 1; j <= n; ++j)
            fout << a[i][j] << ' ';
    }
return 0;
}