input: Write a python function to create a Manager class that inherits from an Employee class and contains methods to initialize the manager's attributes and give the manager a raise.
  assert m1.salary == 50000
  m1.give_raise(5000)
  assert m1.salary == 55000
  assert m2.salary == 65000
  m2.give_raise(10000)
  assert m2.salary == 75000
output: class Employee:
      def __init__(self, name, salary):
          self.name = name
          self.salary = salary
  
  class Manager(Employee):
      def __init__(self, name, salary):
          super().__init__(name, salary)
  
      def give_raise(self, amount):
          self.salary += amount
  
  # Example usage:
  m1 = Manager("Alice", 50000)
  m2 = Manager("Bob", 65000)