#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
	int n;
	long long k;

	cin >> n >> k;
	vector<int> d(n, 0);
	for (int i = 0; i < n; i++) {
		cin >> d[i];
		d[i]--;
	}

	for (int i = 0; i < n; i++) {
		while (d[i] != i) {
			swap(d[i], d[d[i]]);
			k--;
		}
	}

	bool ok = (k >= 0 && k % 2 == 0);
	cout << (ok ? "YES" : "NO") << endl;
	return 0;
}