local max = 10000000
local t = {}
for i = 1, max do t[i] = 0 end
local a, b, a2, b2
for a = 0, 3162 do
  a2 = a * a
  b = a
  b2 = b * b
  if(a == 0) then
    b, b2 = 1, 1
  end
  while(a2 + b2 <= max) do
    t[a2 + b2] = t[a2 + b2] + ((a2 == b2 or a == 0) and 4 or 8)
    b = b + 1
    b2 = b * b
  end
end
local mma = math.max
local mx = 0
local x, y = io.read("*n", "*n")
for i = x, y do
  mx = mma(t[i], mx)
end
print(mx)