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

a=input().split(' ')
p=int(a[0])
q=int(a[1])
m=max(p,q)
d=6-m+1
if d == 6:
    print(1, end='')
    print('/', end='')
    print(1)
elif d == 5:
    print(5, end='')
    print('/', end='')
    print(6)
elif d == 4:
    print(2, end='')
    print('/', end='')
    print(3)
elif d == 3:
    print(1, end='')
    print('/', end='')
    print(2)
elif d == 2:
    print(1, end='')
    print('/', end='')
    print(3)
else:
    print(1, end='')
    print('/', end='')
    print(6)
