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

from math import gcd


def reduceFraction(x, y):
    d = gcd(x, y)

    x = x // d
    y = y // d

    return '{}/{}'.format(x, y)


'''
def GCD(a, b):
    if b == 0:
        return a
    return GCD(b, a % b)
'''

Y, W = [int(item) for item in input().split()]
'''
if Y > W:
    N = 6 - Y + 1
    print(reduceFraction(N, 6))
else:
    N = 6 - W + 1
    print(reduceFraction(N, 6))
'''
Mroll = max(Y, W)
dotCh = 6 - Mroll + 1

print(reduceFraction(dotCh, 6))
