#include <bits/stdc++.h>
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define FORR(i,a,b) for (int i=(a);i>=(b);i--)
#define pb push_back

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef set<int> si;
const int inf = 1e9;
const int mod = 1e9+7;

int m[200005], id[200005];
main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  int n;
  ll k;
  cin >> n >> k;
  FOR(i, 1, n+1){
    int d;
    cin >> d;
    m[i] = d;
    id[d] = i;
  }
  ll co = 0;
  FOR(i, 1, n+1){
    if(i == m[i])continue;
    co++;
    int mi = m[i], idi = id[i];
    swap(m[i], m[idi]);
    swap(id[i], m[mi]);
  }
  cout << ( (co <= k && (k - co) % 2 == 0) ? "YES" : "NO") << endl;
}