#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define loop(i,a,b) for(i=a;i<b;i++)
#define rloop(i,a,b) for(i=a;i>=b;i--)
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
const int inf=1000000001;
const ll INF=1e16;
#define MOD 1000000007
#define mod 1000000009
#define pi 3.14159265358979323846

int main(){
	int n,i,j;
	ll k;
	cin>>n>>k;
	vi d(n+1);
	loop(i,1,n+1){
		cin>>d[i];
	}
	int start,next;
	ll sum=0;
	loop(i,1,n+1){
		if(d[i]==i){
			d[i]=0;
		}else if(d[i]!=0){
			start=i;
			j=i;
			next=d[j];
			d[j]=0;
			while(next!=start){
				sum++;
				j=next;
				next=d[j];
				d[j]=0;
			}
		}
	}
	if(k-sum>=0 && (k-sum)%2==0){
		cout<<"YES"<<endl;
	}else{
		cout<<"NO"<<endl;
	}
}