use strict;
use warnings;
my @input = ( -222, -221, -21, 0, 1,
 1, 2, 3, 5, 8, 13, 21, 
34, 55, 89, 144 );
print $_, " " for oddDigitSum(@input);
print "\n";
exit 0;

sub oddDigitSum {
    map {
         my $sum = 0;
         $sum+=$_
            for split //, abs $_ ;;
        $sum % 2 
        ? $_ # keep oddities
        : () ;
    } @_;
}