sub createcircle {
   my ($foo, $bar) = @_;
   my $qux;
   my $quux = sub {
      if (shift==$foo) { $bar } else { $qux->() }
   };
   $qux = sub { $quux->(shift - 1) };
   return $quux;
}


##</code><code>##

$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$ ;->();print$/