sub AUTOLOAD{if(@_){$_=$_[0];sub{($a+=$_*@_)->
(2*$_||2)}}else{$_='';$a||a}}$\=()->();$\++for
!()->(()->())->()->(()->())->()->(()->())->(()
->())->()->(()->())->(()->())->()->(()->())->(
)->()->(()->())->(()->())->()->(()->())->()->(
()->())..()->();print