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

def fraction(a,b):


     i=2
     if a<b:
         while(i<=a):
             if a%i==0 and b%i==0:
                 a=a//i
                 b=b//i
             else:
                 i=i+1
     elif b>a:
         while (i <= b):
             if a % i == 0 and b % i == 0:
                 a = b // i
                 b = b // i
             else:
                 i = i + 1
     elif a==b:
         a=a//b
         b =a

     print(str(a)+'/'+str(b))


x,y=map(int, input().split() )

if x <=6 and y<=6 :
         if x>y :
             z=x
         elif y>x:
             z=y
         else:
             z=x
         d=(6-z)+1
         fraction(d,6)
