use strict;
use warnings;()=
sort{index+0x47,&$a($b)}sub{print&{;pop}},
sort{sub J{$!++&1}[0]}sub{exec''},map{@$_}
sort{sub _{[(pop)x((1<<$!-->>47)|1)]}!{()=
sort{my$_=$a;$a=_(sub{$_})if!/0/}$a,$b,0}}
sort J('rke%ca hlrPe rhetoan tus;J')=~/./g