a,b = map(str,input().split())

if a == "Sat" and b == "Sun":
    print("8/33")
elif b == "Sat" and a == "Sun":
    print("8/33")
elif a == "Sat" and b == "Sat":
    print("8/33")
elif a == "Sun" and b == "Sun":
    print("8/33")
elif a == "Sun"  or a == "Sat":
    print("8/32")
else:
    print("8/31")