prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  logical-expression
   +--deopzimize-while-included
   +--mutate-logical-expression
   |   `--_expected
   `--simplify-non-boolean
  ```
  
  Convert this description:
  
  app is a head directory that bundles 4 subdirectories. Notable ones include api, sign-in, sign-up among others.
  
  Let me break down the system for you:
  
  At the main level, 'api' keeps 1 child directories: getAuthenticatedUserId.
  At level 2, in directory path 'api > getAuthenticatedUserId', 'getAuthenticatedUserId' is currently empty.
  In the root directory, 'sign-in' carries 1 folders: [[...sign-in]].
  Within directory hierarchy 'sign-in > [[...sign-in]]', Inside '[[...sign-in]]', you'll find it contains nothing at present.
  Back to the top level.
  At the top level, 'sign-up' retains 1 nested folders: [[...sign-up]].
  At level 2, in directory path 'sign-up / [[...sign-up]]', Inside '[[...sign-up]]', you'll find it is empty.
  In the root directory, 'user' stores 1 subfolders: [[...index]].
  In nested path 'user → [[...index]]', '[[...index]]' is unpopulated.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--api\n |   `--getAuthenticatedUserId\n +--sign-in\n |   `--[[...sign-in]]\n +--sign-up\n |   `--[[...sign-up]]\n `--user\n     `--[[...index]]", "description": "app is a head directory that bundles 4 subdirectories. Notable ones include api, sign-in, sign-up among others.\n\nLet me break down the system for you:\n\nAt the main level, 'api' keeps 1 child directories: getAuthenticatedUserId.\nAt level 2, in directory path 'api > getAuthenticatedUserId', 'getAuthenticatedUserId' is currently empty.\nIn the root directory, 'sign-in' carries 1 folders: [[...sign-in]].\nWithin directory hierarchy 'sign-in > [[...sign-in]]', Inside '[[...sign-in]]', you'll find it contains nothing at present.\nBack to the top level.\nAt the top level, 'sign-up' retains 1 nested folders: [[...sign-up]].\nAt level 2, in directory path 'sign-up / [[...sign-up]]', Inside '[[...sign-up]]', you'll find it is empty.\nIn the root directory, 'user' stores 1 subfolders: [[...index]].\nIn nested path 'user \u2192 [[...index]]', '[[...index]]' is unpopulated.\n"}