P = int(raw_input().split(' ')[0])
C = int(raw_input().split(' ')[1])
sosu = [2,3,5,7,11,13]
gouseisu = [4,6,8,9,10,12]
s_num = 1.0
g_num = 1.0

for s in sosu:
	s_num = s_num * s
s_num /= 6

for g in gouseisu:
	g_num = g_num * g
g_num /= 6

if P == 0:
	P = 1

if C == 0:
	C = 1

output = s_num * P * g_num * C

print output