P,C = map(int,raw_input().split())
dice1 = [2, 3, 5, 7, 11, 13]
dice2 = [4, 6, 8, 9, 10, 12]
res = 0
res1 = 0
res2 = 0
for i in dice1:
    res1 += i * (1/ 6.0)
res1 = res1 ** P

for i in dice2:
    res2 += i * (1/ 6.0)

res2 = res2 ** C
res = res1 * res2
print ("%.20lf" % res )