def isqrt(n)
	return 0_i64 if n<=0_i64
	return 1_i64 if n<4_i64 # 1
	x,y=0_i64,n
	while x!=y&&x+1_i64!=y
		x,y=y,(n/y+y)/2_i64
	end
	x
end
h=Hash(Int64,Int32).new 0
x,y=gets.not_nil!.split.map &.to_i64
r=isqrt y
(1_i64..r).each{|x|(0_i64..r).each{|y|h[x*x+y*y]+=1}}
p (x..y).map{|i|h[i]}.max*4