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

import math
n , m = (map (int,input().split()))
i=0
a=n-1
b=m-1
if n>m:
    while 6>a:
        a=a+1
        i=i+1
    
if m>n:
    while 6>b:
        b=b+1
        i=i+1
    
if m==n:
    i=6-m+1
    g=6
    
c=math.gcd(i,6)
i=int(i/c)
g=int(6/c)
print ("{}/{}".format(i,g))
