#include <iostream>
#include <vector>

using namespace std;

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(0);

  long n,k;
  cin >> n >> k;
  vector<long> d(n);
  for(int i = 0; i < n; i++){
    cin >> d[i];
    d[i]--;
  }

  bool flag = true;

  for(int i = 0; i < n; i++){
    if(i == d[i]) continue;
    if(k < 0){
      flag = false;
      break;
    }
    swap(d[d[i]],d[i]);
    k--;
    i--;
  }
  if(flag and k % 2 != 0) flag = false;
  cout << (flag ? "YES" : "NO") << endl;

  return 0;
}