P, C = list(map(float, input().split()))
exp = sum([2, 3, 5, 7, 11, 13]) / 6
exc = sum([4, 6, 8, 9, 10, 12]) / 6
if P == 0:
    print(exc ** C)
elif C == 0:
    print(exp ** P)
else:
    print(exp ** P * exc ** C)