#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vint;
typedef pair<int,int> pint;
typedef vector<pint> vpint;
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
#define all(v) (v).begin(),(v).end()
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define chmax(a, b) a = (((a)<(b)) ? (b) : (a))
#define chmin(a, b) a = (((a)>(b)) ? (b) : (a))
const int MOD = 1e9 + 7;
const int INF = 1e9;

ll d[200010];
int main(void){
	int n; ll k;
	cin >> n >> k;
	ll wcnt = 0;
	rep(i, n){
		cin >> d[i];
		d[i]--;
		if(d[i] != i) wcnt++;
	}
	// printf("%lld\n", wcnt);
	ll good = 0;
	rep(i, n){
		if(d[d[i]] == i && i != d[i]) good++;
	}
	// printf("%lld\n", good);
	ll sum = good / 2 + (wcnt - good) - 1;
	if((wcnt - good) == 0){
		sum = good / 2;
	}else if((wcnt - good) % 2 == 1){
		sum = good / 2 + (wcnt - good) - 1;
	}else{
		sum = good / 2 + (wcnt - good);
	}

	ll nokori = k - sum;
	// printf("%lld %lld\n", sum, nokori);
	if(nokori < 0){
		printf("NO\n");
	}else if(nokori % 2 == 1){
		printf("NO\n");
	}else{
		printf("YES\n");
	}
	return 0;
}