class Solution: def minimumDiameterAfterMerge(self, edges1: List[List[int]], edges2: List[List[int]]) -> int: g1 = {} for a, b in edges1: g1.setdefault(a, []).append(b) g1.setdefault(b, []).append(a) g2 = {} for a, b in edges2: g2.setdefault(a, []).append(b...