func main()
	var p: int :: cui@inputInt()
	var c: int :: cui@inputInt()
	var ans: float :: 1.0
	for(1, p)
		do ans :* (2 + 3 + 5 + 7 + 11 + 13) $ float / 6.0
	end for
	for(1, c)
		do ans :* (4 + 6 + 8 + 9 + 10 + 12) $ float / 6.0
	end for
	do cui@print("\{ans.toStrFmt(".17f")}\n")
end func