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

count = 0
Y = 6

y, W = input().split(" ")

M = max(int(y), int(W))

for i in range(M, 7):
    count += 1

while count != 1 or count != 0:
    if count % 2 == 0 and Y % 2 == 0:
        count = count // 2
        Y = Y // 2
    elif count % 3 == 0 and Y % 3 == 0:
        count = count // 3
        Y = Y // 3
    else:
        break

if count == 0:
    print(f"{count}/1")
else:
    print(f"{count}/{Y}")
