#include "bits/stdc++.h"
using namespace std;
#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))
#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))
#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))
static const int INF = 0x3f3f3f3f; static const long long INFL = 0x3f3f3f3f3f3f3f3fLL;
typedef vector<int> vi; typedef pair<int, int> pii; typedef vector<pair<int, int> > vpii; typedef long long ll;
template<typename T, typename U> static void amin(T &x, U y) { if (y < x) x = y; }
template<typename T, typename U> static void amax(T &x, U y) { if (x < y) x = y; }

int main() {
	int N; long long K;
	while (~scanf("%d%lld", &N, &K)) {
		vector<int> A(N);
		for (int i = 0; i < N; ++ i)
			scanf("%d", &A[i]), -- A[i];
		vector<bool> vis(N);
		int num = N;
		rep(i, N) if (!vis[i]) {
			-- num;
			int j = i;
			while (!vis[j]) {
				vis[j] = true;
				j = A[j];
			}
		}
		bool ans = num <= K && (K - num) % 2 == 0;
		puts(ans ? "YES" : "NO");
	}
	return 0;
}