P, C = map(int, input().split())
exps = (sum([2,3,5,7,11,13]) / 6)** P if P > 0 else 0
expg = (sum([4,6,8,9,10,12]) / 6) ** C if C > 0 else 0
print(exps + expg if exps == 0 or expg == 0 else exps * expg)