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Given a rooted company hierarchy with the CEO at the top, answer queries about subordinate relationships (e.g., count direct/indirect subordinates, test if one employee is in another’s subtree, and possibly handle reassignments) under tight performance constraints; the core challenge is representing the org tree to support fast subtree queries and updates (think Euler-tour / subtree ranges, LCA or heavy-light decomposition with range/query data structures).
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Leetcode 3236. CEO Subordinate Hierarchy
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