6 6
 1 4
 4 4
 3 3
 6 4
 6 3
 5 4
 5 6
 3 4
 1 3
 3 2
 5 5
 1 1
 2 1
 3 1
 3 5
 1 6
 6 5
 2 3
 4 3
 2 2
 3 6
 1 2
 6 1
 2 5
 4 5
 1 5
 6 2
 4 6
 5 1
 4 1
 5 2
 2 4
 2 6
 5 3

1/6
 1/2
 1/2
 2/3
 1/6
 1/6
 1/3
 1/6
 1/2
 2/3
 2/3
 1/3
 1/1
 5/6
 2/3
 1/3
 1/6
 1/6
 2/3
 1/2
 5/6
 1/6
 5/6
 1/6
 1/3
 1/3
 1/3
 1/6
 1/6
 1/3
 1/2
 1/3
 1/2
 1/6
 1/3

H="hello Word"
k=input()
y=int(k.split(" ")[0])
w=int(k.split(" ")[1])
if (y==6) or (w==6):
  print("1/6")
elif (y==5) or (w==5):
  print("1/3")
elif (y==4) or (w==4):
  print("1/2")
elif (y==3) or (w==3):
  print("2/3")
elif (y==2) or (w==2):
  print("5/6")
elif (y==1) or (w==1):
  print("1/1")