def lscan; gets.split.map(&:to_i); end

n, h = lscan

div = (1..n).filter{|x| n/x*x == n}.to_a
# p div
if h >= 3
  p -1
  exit
end

la = div.pop

# print (la.to_s + ' ')*la
print [la.to_s]*la*' '

puts if h == 2
puts div.map{|d| [d.to_s]*d*' '}.flatten*' '