A, B = gets.split.map(&:to_i)
dp = Array.new(610, 0)
(0 .. A).each do |a|
  (0 .. B).each do |b|
    dp[a + 5 * b] += 1
  end
end
puts dp.each_index.select{|i| i > 0 && dp[i] > 0 }