Ok, I am basically stuck here:

#!/usr/bin/perl

use Data::Dumper;
while(<DATA>)
{
    $all_numbers=$_;
    chomp $all_numbers;

    @vector=();
    @vector = split(/\@/, $all_numbers);

$start;
@answer;

for ( sort {$a <=> $b} @vector)
  {
  if( not defined $start or $_ > $start + 1000 )
    {
    push @answer, [ $_ ];
    $start = $_;
    }
  else
    {
    push @{ $answer[-1] }, $_;
    }
  }

  for $i ( 0 .. $#answer ) 
  {
      print "$i\t [ @{$answer[$i]} ]\n";
  }
print "//\n";

}

__DATA__
141326478@103194415@50137382@86004442@86004438@86004434@85280835@17916
+134@85280834@86004437@85280832@53250112@50137387@50137380@29223108@25
+694155@86004431
6901075@6901079@34073753@88911904@34073751@91346449@34073757
[download]

If I only have 1 line of data, it works perfectly, but If I have these 2, it creates this:

0     [ 17916134 ]
1     [ 25694155 ]
2     [ 29223108 ]
3     [ 50137380 50137382 50137387 ]
4     [ 53250112 ]
5     [ 85280832 85280834 85280835 ]
6     [ 86004431 86004434 86004437 86004438 86004442 ]
7     [ 103194415 ]
8     [ 141326478 ]
//
0     [ 17916134 ]
1     [ 25694155 ]
2     [ 29223108 ]
3     [ 50137380 50137382 50137387 ]
4     [ 53250112 ]
5     [ 85280832 85280834 85280835 ]
6     [ 86004431 86004434 86004437 86004438 86004442 ]
7     [ 103194415 ]
8     [ 141326478 6901075 6901079 34073751 34073753 34073757 88911904 
+91346449 ]
//
[download]

What am I doing wrong?