#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int long long
signed main(){
  int n,k;
  cin>>n>>k;
  int d[n];
  for(int i=0;i<n;i++) cin>>d[i];
  for(int i=0;i<n;i++) d[i]--;
  int r=0;
  int u[n];
  memset(u,0,sizeof(u));
  for(int i=0;i<n;i++){
    if(u[i]) continue;
    int t=0,c=i;
    while(!u[c]){
      u[c]=1;
      c=d[c];
      t++;
    }
    r+=t-1;
  }
  //cout<<r<<endl;
  if(r>k||(r-k)%2) cout<<"NO"<<endl;
  else cout<<"YES"<<endl;
  return 0;
}