a,b=input().split()
k=[0 for _ in range(2)]
if a == "Sat" or a == "Sun":
	k[0] = 1
if b == "Sat" or b == "Sun":
	k[1] = 1
if k[0] == 1 and k[1] == 1:
	print("8/33")
elif k[0] == 1 and k[1] == 0:
	print("8/32")
else:
	print("8/31")