#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000


int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
	int N, D[200010];
	ll K;

	cin >> N >> K;

	rep(i, N) {
		cin >> D[i];
		D[i]--;
	}

	bool v[200010] = {};
	rep(i, N) {
		if (v[i]) continue;
		int cnt = 0;
		int now = i;
		while(!v[now]++) now = D[now], cnt++;
		K -= cnt - 1;
	}
	if (K % 2 == 0 && K >= 0) {
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}

    return 0;
}