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

# Die Roll
def probab(y, w):
    big = max(y, w) - 1
    if big == 0:
        print(f"{ 1 }/{ 1 }")
    if big == 1:
        print(f"{ 5 }/{ 6 }")
    if big == 2:
        print(f"{ 2 }/{ 3 }")
    if big == 3:
        print(f"{ 1 }/{ 2 }")
    if big == 4:
        print(f"{ 1 }/{ 3 }")
    if big == 5:
        print(f"{ 1 }/{ 6 }")




x = list(map(int, input().rstrip().split()))
y = x[0]
w = x[1]
probab(y, w)