#include <fstream>

using namespace std;

int N, M, sol;
int A[510][501];

int main()
{
	ifstream fin("piese.in");
	ofstream fout("piese.out");
	fin >> N >> M;
	
	for (int i = 1; i <= N; i++)
		for (int j = 1; j <= M; j++)
			if (!A[i][j])
			{
				int where = 0;
				for (int k = 8; k >= 0; k--)
					if ( i + (1 << k) - 1 <= N && j + (1 << k) - 1 <= M && !A[i + (1 << k) - 1][j + (1 << k) - 1])
					{
						where = k;
						k = -1;
					}
				sol++;
			 	for (int I = i; I <= i + (1 << where) - 1; I++)
					for (int J = j; J <= j + (1 << where) - 1; J++)
						A[I][J] = sol;
			}
	
	fout << sol << '\n';
	for (int i = 1; i <= N; i++, fout << '\n')
		for (int j = 1; j <= M; j++)
			fout << A[i][j] << ' ';
}