#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	ll N, K;
	cin >> N >> K;

	ll sum = 0;
	for(int i = 0; i < N; i++) {
		int d;
		cin >> d;
		d--;
		if(i != d) sum++;
	}

	if(sum == 0) {
		if(K % 2 == 0) {
			cout << "YES" << endl;
		}
		else {
			cout << "NO" << endl;
		}
	}
	else if(sum <= 3) {
		if(sum - 1 <= K && K % 2 != sum % 2) {
			cout << "YES" << endl;
		}
		else {
			cout << "NO" << endl;
		}
	}
	else {
		if(sum - 1 <= K) {
			cout << "YES" << endl;
		}
		else {
			cout << "NO" << endl;
		}
	}


}