原文链接: https://leetcode-cn.com/problems/clone-graph
英文原文Given a reference of a node in a connected undirected graph.
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原文链接: https://leetcode-cn.com/problems/course-schedule
英文原文There are a total of numCourses courses you have to take, l
原文链接: https://leetcode-cn.com/problems/course-schedule-ii
英文原文There are a total of numCourses courses you have to take
原文链接: https://leetcode-cn.com/problems/minimum-height-trees
英文原文A tree is an undirected graph in which any two vertice
原文链接: https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix
英文原文Given an m x n integers matrix, return
原文链接: https://leetcode-cn.com/problems/reconstruct-itinerary
英文原文You are given a list of airline tickets where tickets
原文链接: https://leetcode-cn.com/problems/evaluate-division
英文原文You are given an array of variable pairs equations and an
原文链接: https://leetcode-cn.com/problems/number-of-provinces
英文原文There are n cities. Some of them are connected, while s
原文链接: https://leetcode-cn.com/problems/redundant-connection
英文原文In this problem, a tree is an undirected graph that is
原文链接: https://leetcode-cn.com/problems/redundant-connection-ii
英文原文In this problem, a rooted tree is a directed graph
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