day = input().strip().split(" ")
if "Sun" in day and "Sat" in day:
    print("8/33")
elif day[0] == day[1]:
    if day[0] == "Sun" or day[0] == "Sat":
        print("8/33")
    else:
        print("8/31")
elif "Sun" == day[0] or "Sat" == day[0]:
    print("8/32")
else:
    print("8/31")