input: from typing import Tuple
  
  def automate_login(website: str, username: str, password: str) -> str:
      """ Automates the login process on a given website using Selenium.
      >>> automate_login('http://www.example.com', 'username', 'password')
      'Login successful!'
      """
output:     
      from selenium import webdriver
      from selenium.webdriver.common.by import By
      from selenium.webdriver.common.keys import Keys
      import time
  
      # Initialize the WebDriver (assuming Chrome)
      driver = webdriver.Chrome()
      driver.get(website)
  
      # Find the username and password fields and input the credentials
      username_field = driver.find_element(By.NAME, 'username')
      password_field = driver.find_element(By.NAME, 'password')
  
      username_field.send_keys(username)
      password_field.send_keys(password)
  
      # Submit the form
      password_field.send_keys(Keys.RETURN)
  
      # Wait for the login process to complete
      time.sleep(2)
  
      # Check if login was successful
      if 'login' not in driver.current_url:
          driver.quit()
          return 'Login successful!'
      else:
          driver.quit()
          return 'Login failed!'
  