#include <iostream>
using namespace std;

int main(){
	long long n, k;
	cin >> n >> k;
	long long d[n];
	for(int i = 0; i < n; i++){
		cin >> d[i];
		d[i]--;
	}
	long long count = 0;
	for(int i = 0; i < n; i++) if(d[i] != i){
		count++;
		swap(d[i], d[d[i]]);
	}
	k -= count;
	cout << (k >= 0 && !(k & 1) ? "YES" : "NO") << endl;
}