#include <iostream>
#include <vector>
using namespace std;
int main(){
	int N;
	long long K;
	cin >> N >> K;
	vector<int> D(N);
	for (int i = 0; i < N; i++){
		cin >> D[i];
		D[i]--;
	}
	int M = 0;
	vector<bool> used(N, false);
	for (int i = 0; i < N; i++){
		if (!used[i]){
			used[i] = true;
			int cnt = 1;
			int p = i;
			while (!used[D[p]]){
				used[D[p]] = true;
				cnt++;
				p = D[p];
			}
			M += cnt - 1;
		}
	}
	if (M >= K && M % 2 == K % 2){
		cout << "YES" << endl;
	} else {
		cout << "NO" << endl;
	}
}