#include <iostream>
#define int long long
using namespace std;

int n, k;
int d[200000];	//d[人] = 魂
int p[200000];	//d[魂] = 人

signed main() {
	int i;
	
	cin >> n >> k;
	for (i = 0; i < n; i++) {
		cin >> d[i]; d[i]--;
		p[d[i]] = i;
	}
	
	int minCost = 0;
	for (i = 0; i < n; i++) {
		if (p[i] != i) {
			swap(d[p[i]], d[i]);
			swap(p[d[p[i]]], p[d[i]]);
			minCost++;
		}
	}

	if (minCost <= k && minCost % 2 == k % 2) { cout << "YES" << endl; }
	else { cout << "NO" << endl; }
	return 0;
}