S1, S2 = input().split()

B1 = S1 == 'Sat' or S1 == 'Sun'

B2 = S2 == 'Sat' or S2 == 'Sun'

if B1 and B2:
    
    print("8/33")
    
elif B1 or B2:
    
    print("8/32")
    
else:
    
    print("8/31")