#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <functional>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <valarray>
#include <vector>

#define N 1000
// #define MOD 1000000007
#define MOD 1000000000000
#define pe(str) return cout<<(str)<<endl,0
#define px(str) {cout<<(str)<<endl;exit(0);}
#define re(i,n) for(int i=0;i<(n);i++)
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define fe(i,n,f) for_each(i,n,f)
#define bw(a,b,c) (((a)<=(b))&&((b)<=(c)))
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int,int> pii;

int main(void){
	ll n,k;
	cin>>n>>k;
	ll d[n];
	bool f[n];
	ll c=0;
	re(i,n)f[i]=false;
	re(i,n)cin>>d[i],d[i]--;
	re(i,n){
		if(f[i])continue;
		int w=d[i];
		f[i]=f[w]=true;
		int a=0;
		while(w!=i){
			// cout<<w<<":"<<i<<endl;
			w=d[w];
			f[w]=true;
			a++;
		}
		// cout<<"a:"<<a<<endl;
		// if(a!=0)a++;
		c+=a;
	}
	// cout<<c<<endl;
	if(k-c>=0&&(k-c)%2==0)pe("YES");
	pe("NO");
	return 0;

}