#include<bits/stdc++.h>

using namespace std;

int main()
{
  int N, D[200000];
  long long K;

  cin >> N >> K;
  for(int i = 0; i < N; i++) {
    cin >> D[i];
    --D[i];
  }

  bool v[200000] = {};
  for(int i = 0; i < N; i++) {
    if(v[i]) continue;
    int sz = 0, now = i;
    while(!v[now]++) now = D[now], sz++;
    K -= sz - 1;
  }

  if(K % 2 == 0 && K >= 0) {
    cout << "YES" << endl;
  } else {
    cout << "NO" << endl;
  }
}