n = list(map(str,input().split()))

if (n[0]=='Sat' and n[1]=='Sun') or (n[0]=='Sun' and n[1]=='Sat') or (n[0]=='Sat' and n[1]=='Sat'):
  print("8/33")
elif n[0]=='Sun' or n[0]=='Sat':
  print("8/32")
else:
  print("8/31")