#include <fstream.h>
#define DIM 500
int  N, M, i, j, k, patrat, ii, jj;
int A[DIM][DIM];
int main()
{
	ifstream f("piese.in");
	ofstream g("piese.out");
	f>>M>>N;
	
	for (i=1;i<=M;i++)
		for (j=1;j<=N;j++)
			if (A[i][j] == 0) {
				patrat++;
				k=1;
				while (i+2*k-1<=M && j+2*k-1<=N)
					k*=2;
				for (ii=i;ii<=i+k-1;ii++)
					for (jj = j;jj<=j+k-1;jj++)
						A[ii][jj] = patrat;
			}
	
	f.close();
	
	g<<patrat<<"\n";
	for (i=1;i<=M;i++) {
		for (j=1;j<=N;j++)
			g<<A[i][j]<<" ";
		g<<"\n";
	}
	g.close();
	return 0;
}