func main()
	var a: float :: cui@inputFloat()
	var b: float :: cui@inputFloat()
	var ans: float
	if(a = b)
		do ans :: (a ^ 2.0 + b ^ 2.0) ^ 0.5
	else
		do ans :: (a ^ 2.0 - b ^ 2.0).abs() ^ 0.5
	end if
	do cui@print("\{ans}\n")
end func