a, b = input().split()

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