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 main():
    Y, W = map(int ,input().split())
    def can_travel_to_transylvania(y, w):
        winner = max(y, w)
        if winner == 1:
            return "1/1"
        chances = 6 - (winner - 1)
        factor_of_6 = 2, 3, 6
        for fact in factor_of_6:
            if chances%fact == 0:
                return f"{chances//fact}/{6//fact}"
        return f"{chances}/6"

    print(can_travel_to_transylvania(Y, W))
if __name__ == '__main__':
    main()