H,W=map(int,input().split())
if H%2==0 and W%2==0:
	print(H*W)
	[print(*[1]*W) for _ in range(H)]
elif H%2!=0 and W%2==0:
	print((H-1)*W)
	[print(*[1]*W) for _ in range(H-1)]
	print(*[0]*W)
elif W%2!=0 and H%2==0:
	print((W-1)*H)
	[print(*[1]*(W-1)+[0]) for _ in range(H)]
else:
	print(H*W-max(H,W))
	d=[1,0]
	[print(*[d[min(i,W-1)==min(j,H-1)] for j in range(W)]) for i in range(H)]