#include<bits/stdc++.h>
using namespace std;
#ifdef LOCAL_DEBUG
  #include "LOCAL_DEBUG.hpp"
#endif
#define int long long

signed main(){

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

  int ans = 0;
  for(int i = 0; i < n; i++){
    while(d[i] != i){
      swap(d[i], d[d[i]]);
      ans++;
    }
  }
  if(ans <= k && ans % 2 == k % 2){
    cout << "YES" << endl;
  }else{
    cout << "NO" << endl;
  }

  return 0;
}