#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

my $hash = '18165163011005162717';
my $signed = unpack 'q', pack 'Q', $hash;  # Using 'q' woudl work, too.
say $signed eq "-281581062704388899";


##</code><code>##

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,