#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "math.h"
#include "utility"
#include "map"

using namespace std;
const long long int MOD = 1000000007;

int N;
long long int K;
int num[200001];
bool flag[200001];
int t;
queue<int> Q;

int main() {
	cin >> N >> K;
	for (int i = 1; i <= N; i++) {
		flag[i] = true;
		cin >> num[i];
	}
	for (int i = 1; i <= N; i++) {
		if (flag[i]) {
			t++;
			Q.push(i);
			flag[i] = false;
		}
		while (!Q.empty()) {
			if (flag[num[Q.front()]]) {
				Q.push(num[Q.front()]);
			}
			Q.pop();
		}
	}
	if ((N - t) % 2 == K % 2) {
		cout << "YES\n";
	}
	else {
		cout << "NO\n";
	}
	return 0;
}