#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>
#include <stack>
#include <cctype>
#include <stdio.h>

using namespace std;

int main() {

	int n = 0, k = 0;
	cin >> n >> k;

	int tmp = 0;
	int ct = 0;
	for (int i = 1; i < n + 1; i++) {
		cin >> tmp;
		if (tmp != i) {
			ct++;
		}
	}
/*	cout<<ct;
	if((ct / 2)  > k){
		cout << "NO" << endl;
		return 0;
	}*/
/*	if (ct % 2 == 0) {*/
		if ((ct / 2) % 2 == k % 2  && k>=ct/2) {
			cout << "YES" << endl;
		} else {
			cout << "NO" << endl;
		}
	/*}else if (ct %2 ==1) {
		if (((ct-1)) % 2 == k % 2) {
			cout << "YES" << endl;
		} else {
			cout << "NO" << endl;
		}
	}*/
	return 0;
}