class Node(object):
    """
    """

    def __init__(self, val, next=None):
        self.val = val
        self._next = next

    def __str__(self):
        output = f' {self.val}'
        return output

2bd37896c56b604e7779a90b152ec93098fea3a1
class Node(object):
    <mask token>
    <mask token>
    <mask token>

class Node(object):
    <mask token>
    <mask token>

    def __str__(self):
        output = f' {self.val}'
        return output

class Node(object):
    <mask token>

    def __init__(self, val, next=None):
        self.val = val
        self._next = next

    def __str__(self):
        output = f' {self.val}'
        return output

class Node(object):
    """
    """

    def __init__(self, val, next=None):
        self.val = val
        self._next = next

    def __str__(self):
        output = f' {self.val}'
        return output
