X, Y = gets.split.map(&:to_i)
R = Math.sqrt(Y).ceil
C = Hash.new(0)
(1 .. R).each do |x|
  (0 .. R).each do |y|
    r2 = x ** 2 + y ** 2
    C[r2] += 1 unless r2 < X || r2 > Y
  end
end
puts (C.values.max || 0) * 4