(Statements
  (Assignment
    (Identifier)
  { (RShift
    {-(Identifier)-}
    {-(Integer)-})
  ->(Plus
    {+(Identifier)+}
    {+(Integer)+}) })
{+(Assignment
  {+(Identifier)+}
  {+(RShift
    {+(Identifier)+}
    {+(Integer)+})+})+}
  (Assignment
  { (Identifier)
  ->(Identifier) }
    (DividedBy
    { (Identifier)
    ->(Identifier) }
      (Integer)))
{-(Assignment
  {-(Identifier)-}
  {-(Plus
    {-(Identifier)-}
    {-(Integer)-})-})-})