#!/usr/bin/perl 
use strict;
use warnings;
use Data::Dumper;
use Set::IntSpan;


chomp( my $numbers = <STDIN> );
# $numbers = '1,2,4,6..18,47,49,55..65,90';

my $run_list = [ eval $numbers ];

my $set;
eval { $set = new Set::IntSpan $run_list };
$@ and print "$@: Try again\n";

my @elem = elements $set;
print Dumper \@elem;

#Output:

# $VAR1 = [
#    1,  2,  4,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 16, 17, 18,
#    47, 49, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 90
# ];