#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int d[200000+1];
bool vis[200000+1];

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  long long k;
  cin >> n >> k;

  for (int i = 1; i <= n; i++)
    cin >> d[i];

  int ret = 0;
  for (int i = 1; i <= n; i++) {
    if (vis[i])
      continue;
    int c = 0;
    for (int j = i; !vis[j]; j = d[j]) {
      vis[j] = true;
      ++c;
    }
    ret += c-1;
  }

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