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