sub g {$n=pop;$h{abs($_-$n)}=$_ for@_;@s=sort{$a<=>$b}keys%h;$h{shift@s};}

##</code><code>##

sub g {$n=pop;$h{abs($_-$n)}=$_ for@_;@s=sort{$a<=>$b}keys%h;$h{shift@s}}

##</code><code>##

sub g {$n=pop;$h{abs($_-$n)}=$_ for@_;$h{(sort{$a<=>$b}keys%h)[0]}}