# -*- coding: utf-8 -*-

import random

P, C = map(int, raw_input().split())

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

KP = 1.0 * sum(primes) / len(primes)
KC = 1.0 * sum(composite) / len(composite)

print "%.9f" % (KP ** P * KC ** C)