Problem

Implement a queue using a singly linked list. Your queue should support the following operations:

1. enqueue(value: int): Add an item to the end of the queue.
2. dequeue() -> int: Remove and return the item from the front of the queue. If the queue is empty, return -1.
3. is_empty() -> bool: Check if the queue is empty.

Examples

Example 1:

queue = Queue()
queue.enqueue(1)
queue.enqueue(2)
output: queue.dequeue()  # returns 1
output: queue.dequeue()  # returns 2
output: queue.dequeue()  # returns -1

Example 2:

queue = Queue()
output: queue.is_empty()  # returns True
queue.enqueue(5)
output: queue.is_empty()  # returns False

Constraints

• The queue can have at most 10^5 elements.