s1,s2 = input().split()
if (s1=='Sat' and s2=='Sun') or (s2=='Sat' and s1=='Sun'):
    print('8/33')
elif (s1==s2 and s1=='Sat') or (s1==s2 and s1=='Sun'):
    print('8/33')
elif (s1=='Sat' or s1=='Sun') and (s2!='Sat' and s2!='Sun'):
    print('8/32')
else:
    print('8/31')