Student Record Manager

You are given the task of implementing a data structure to manage student records. The data structure supports the following operations:

• ADD: Adds a new student record with a given student ID and name.
• REMOVE: Removes the student record with the given student ID. If the student exists, removal is successful.
• GET: Retrieves the name of the student with the provided ID. If the student does not exist, output None.

Internally, you should maintain a mapping from the student ID to the student name. You are required to implement the operations to support an interactive command based system. In your implementation, the commands will be provided from standard input and your output should be printed to standard output.

Formally, you need to implement a class (or equivalent) called StudentManager with the following methods:

• \( add\_student(student\_id, student\_name) \): Adds a student record.
• \( remove\_student(student\_id) \): Removes the record and returns \( \texttt{True} \) if removal was successful or \( \texttt{False} \) if the student did not exist.
• \( get\_student(student\_id) \): Returns the student name if it exists or \( \texttt{None} \) otherwise.

inputFormat

The first line contains an integer \( n \) denoting the number of commands. Each of the following \( n \) lines contains a command. Each command is formatted as follows:

• ADD [student_id] [student_name]: where student_id is an integer and student_name is a string (it may contain spaces).
• REMOVE [student_id]: removes the student record with the given ID.
• GET [student_id]: retrieves the record associated with the specified student ID.

For ADD commands, no output is expected. For REMOVE and GET commands, print the result on a separate line.

outputFormat

For each REMOVE and GET command, output the result on a new line:

• For a REMOVE command, output True if a record was removed, otherwise False.
• For a GET command, output the student's name if found; otherwise, output None.

## sample

4
ADD 1 John
GET 1
REMOVE 1
GET 1

John
True
None

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