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DIY: Time Needed to Inform All Employees

DIY: Time Needed to Inform All Employees

Solve the interview question "Time Needed to Inform All Employees" in this lesson.

Problem statement

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

Each employee has one direct manager given in the manager array. In the manager array, manager[i] is the direct manager of the i-th employee, ...