摘要：
题目描述： class Solution(object): def mctFromLeafValues(self, arr): """ :type arr: List[int] :rtype: int """ n = len(arr) f = {1: [0] * n} for l in range( 阅读全文
摘要：
恢复内容开始 题目描述： class Solution: def shortestAlternatingPaths(self, n: int, red_edges, blue_edges): def function(n,r,b): result=[[float("inf")]*2 for _ in 阅读全文