++ for the wow factor.
perl -MO=Deparse countdown.pl yields:
$/ = qq(mkd\@h lqvj}" |[mhrqj\@ WW RB ?=H\n ;]B y[I LO
+] opq rc\@ PB yS MLQ\n }By SS] hlq vj\@ twq vP GG
+ Rsa\n hPw lbPB|=B?;Q ^By_B|=B ?;\\eplP ByQ\nRH VVB E|Q
+ QVD :lD ]m rc \n ch\@I ]{{ );
$n = "4 km j\@ !vw\n\njpcl\@(clr\@0aeucl";
$r = sub {
$z = shift @_;
foreach $_ (0 .. 7) {
$b[$_] = vec($z, $_, 1);
}
my $v .= $b[0];
foreach $_ (1, 3, 5) {
$v .= $b[$_ + 1] . $b[$_];
}
$v .= $b[7];
return pack('b*', $v);
}
;
$n =~ tr/"\n / /d;
$e = sub {
eval $_[0];
$";
}
;
$t = sub {
join '', map(&$r($_), split(//, $_[0], 0));
}
;
$" = &$t($n);
$| = 1;
$/ =~ tr/"\n / /d;
&print(&$e(&$t($/)));
Well done!
