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  1. or download this
    #!/usr/bin/perl
    
    ...
    [$ *++] =$ _)&& ($ *[$ *++ ]=$ ")&&($ ,[$ .++]=$ ")for( split// ,join'
    +' ,map { s
    <(-*\d+)(?{ pack 'c' ,$ ,+=$ _})><$^R> &&$ _}@ .);$ *[++$ *] =$ /;$ %=
    +$ |; map {
    print $ _^ ${ $ * }[ $ %++ ]}$ * > $ .?($ * = \ @ , )&& @ * :($ * = \ 
    +@ *) && @,
    
  2. or download this
    $,=42;for(34,0,-3,9,-11,11,-17,7,-5){$*.=pack'c'=>$,+=$_}for(reverse s
    +plit//=>$*
    ){$%++?$ %%2?push@C,$_,$":push@c,$_,$":(push@C,$_,$")&&push@c,$"}$C[$#
    +C]=$/;($#C
    >$#c)?($ c=\@C)&&($ C=\@c):($ c=\@c)&&($C=\@C);$%=$|;for(@$c){print$_^
    +$$C[$%++]}