#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef pair<int,int> P;

int main(){
  int n;
  ll k;
  cin >> n >> k;
  vector<int> d(n);
  rep(i,n) cin >> d[i], --d[i];
  rep(i,n) {
    if (i == d[i]) continue;
    if (k == 0) {
      cout << "NO" << endl;
      return 0;
    }
    swap(d[i], d[d[i]]);
    --k;
    --i;
  }

  if (k % 2 == 0) cout << "YES" << endl;
  else cout << "NO" << endl;
  
  return 0;
}