题目描述：
LeetCode 685. Redundant Connection II
In this problem, a rooted tree is a directed graph such that, there is exactly one node (the root) for which all other nodes are descendants of this node, plus every node has exactly ...
[LeetCode]Redundant Connection II
LeetCode Weekly Contest 51解题报告
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LeetCode.
LeetCode Weekly Contest 51是LeetCode举办的第五十五场正式周赛，共4道题目，比赛时长1.5小时。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-51/
题解列表：
LeetCode 681. Next Closest Time
[LeetCode]K Empty Slots
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LeetCode.
题目描述：
There is a garden with N slots. In each slot, there is a flower. The N flowers will bloom one by one in N days. In each day, there will be exactly one flower ...
[LeetCode]Redundant Connection
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LeetCode.
题目描述：
LeetCode 684. Redundant Connection
We are given a "tree" in the form of a 2D-array, with distinct values for each node.
In the given 2D-array, each element pair [u, v] represents that v is a child of u in ...
[LeetCode]Next Closest Time
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LeetCode.
题目描述：
LeetCode 681. Next Closest Time
Given a time represented in the format "HH:MM", form the next closest time by reusing the current digits. There is no limit on how many times a digit can be reused.
You may ...