Grokking Graph Algorithms for Coding Interviews
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Time Needed to Inform All Employees (medium)
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Problem Statement

A company has n employees, each with a unique ID from 0 to n-1. The head of the company has an ID headID.

Each employee has a direct manager, indicated by the manager array, where manager[i] is the direct manager of the i<sup>th</sup> employee. The head of the company has no manager, so manager[headID] = -1.

The company needs to inform all employees about urgent news. The head will inform their direct subordinates, who will then inform their subordinates, and so on. Each employee i needs informTime[i] minutes to inform all their direct subordinates

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