S = [2,3,5,7,11,13]
G = [4,6,8,9,10,12]

p, g = gets.split.map(&:to_i)
n = (S.inject(&:+) ** p) * (G.inject(&:+) ** g)
d = 6 ** (p + g)
s = (n * 10_000_000_000 / d).to_s
s[-10,0] = "."
puts s