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

x = list(map(int,input().split()))
y = max (x[0],x[1])
n = (6 - y)+1
prob = n / 6
if (n == 2 or n == 4):
  a = int(prob * 3) 
  b = 3 
elif(n == 3):
  a = 1 
  b = 2
elif(n == 6):
  a = 1
  b = 1
elif(n == 0):
  a = 0
  b = 1
else:
  a = int(prob*6)
  b = 6 
  
  
print(a,b,sep = '/')
