#!/usr/bin/env perl
# Extract states from selected invariant subspace from annotated.dat
# rok.zitko@ijs.si, June 2013

use warnings;

$#ARGV+1 == 4 or die;

my $peo = shift; # e)ven or o)dd
my $pq = shift; # charge Q
my $ps = shift; # spin S
my $nr = shift; # seniority

open (F, "<annotated.dat") or die;

$cnt = 0;
$seniority = 0;

while (<F>) {
  !/^#/ or next;
  chomp;
  if ($_ eq "") {
    $cnt++;
    $seniority = 0;
    next;
  }
  ($e, $q, $s) = split;

  if (($cnt % 2 == 0) xor ($peo eq "o")) {
    if (($q eq $pq) and ($s eq $ps)) {
      $seniority++;
      if ($seniority == $nr) {
        print "$cnt $e\n";
      }
    }
  }
}

print "\n";