a,b=map(str,input().split())
if a=="Sat":
    if b=="Sat" or b=="Sun":
        print("8/33")
    else :
        print("8/32")

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