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Description
In this problem, you are asked to keep track of the hierarchical structure of an organization s changing staff. As the first event in the life of an organization, the Chief Executive Officer (CEO) is named. Subsequently, any number of hires and fires can occur. Any member of the organization (including the CEO) can hire any number of direct subordinates, and any member of the organization (including the CEO) can be fired. The organization s hierarchical structure can be represented by a tree.