defmodule Test do
	def gcd(a, b) do
		if b > 0 do
			gcd(b, rem(a, b))
		else
			a
		end
	end
end

IO.puts("test")

n = 1000
a = Enum.to_list(0..n-1)
IO.puts(Enum.reduce(a, 0, fn (i, s) ->
	s + Enum.reduce(a, 0, fn (j, s) ->
		s + Test.gcd(i, j)
	end)
end))