#!/usr/bin/env perl

use strict;
use warnings;

my ($n, $k) = split / /, <>;
my @d = split / /, <>;

my $count = 0;
for (my $i = 0; $i < $n;) {
  if ($i != $d[$i] - 1) {
    ($d[$i], $d[$d[$i] - 1]) = ($d[$d[$i] - 1], $d[$i]);
    $count++;
  } else {
    $i++;
  }
}
print $count <= $k && ($k - $count) % 2 == 0 ? "YES\n" : "NO\n";