input: Write a python function to initialize a VendingMachine object, insert coins, and get the total amount of coins inserted.
  assert initialize_and_insert(2, 3) == 95
  assert initialize_and_insert(0, 10) == 100
  assert initialize_and_insert(4, 0) == 100
output: class VendingMachine:
      def __init__(self):
          self.total = 100
  
      def insert_coins(self, coins):
          self.total += coins
  
      def get_total(self):
          return self.total
  
  def initialize_and_insert(coins1, coins2):
      vm = VendingMachine()
      vm.insert_coins(coins1)
      vm.insert_coins(coins2)
      return vm.get_total()