#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)




typedef long long ll;
int N; ll K;
int D[201010];
//-----------------------------------------------------------------
int idx[201010];
string sol() {
	rep(i, 0, N) idx[D[i]] = i;

	int cnt = 0;
	rep(i, 0, N) {
		if (idx[i] == i) continue;
		
		int j = i, k = idx[i];
		int a = D[j], b = D[k];

		swap(D[j], D[k]);
		swap(idx[a], idx[b]);
		cnt++;
	}

	ll d = K - cnt;

	if (d < 0) return "NO";
	if (d % 2 == 0) return "YES";
	return "NO";
}
//-----------------------------------------------------------------
int main() {
	cin >> N >> K;
	rep(i, 0, N) scanf("%d", &D[i]), D[i]--;
	cout << sol() << endl;
}