#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream> 
#include<map>
#include <iomanip>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
using namespace std;
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)
#define LONG_INF 800000000000000000
int main() {
	long long n, k;
	cin >> n >> k;
	vector<int> nara;
	map<int, int> wow;
	REP(i, n) {
		int tmp;
		cin >> tmp;
		nara.push_back(tmp);
		wow[tmp] = i;
	}
	for (int i = 0;i < n;++i) {
		if (nara[i] != i + 1) {
			//入れ替えるのはiとwow[i+1]の値
			k--;
			pair<int, int> hogee = make_pair(i, wow[i + 1]);
			wow[nara[i]] = wow[i + 1];
			wow[i + 1] = i;
			swap(nara[hogee.first], nara[hogee.second]);
		}
	}
	if (k % 2 == 0) {
		cout << "YES" << endl;
	}
	else cout << "NO" << endl;
	return 0;
}