#include <fstream>

using namespace std;
int N, M, A[510][510], i, j, k, val, ii, jj;

int main() {
	ifstream f("piese.in");
	ofstream g("piese.out");
	
	f>>N>>M;
	
	val = 0;
	for (i=1;i<=N;i++) 
		for (j=1;j<=M;j++)
			if (A[i][j] == 0){
				k = 1;
				while (i+k-1 <= N && j+k-1 <= M)
					k*=2;
				k/=2;
				val++;
				for (ii=i;ii<=i+k-1;ii++)
					for (jj=j;jj<=j+k-1;jj++)
						A[ii][jj] = val;
			}
	g<<val<<"\n";
	for (i=1;i<=N;i++) {
		for (j=1;j<=M;j++) {
			g<<A[i][j]<<" ";
		}
		g<<"\n";
	}
	return 0;
}