#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define mt make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define pb push_back
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);

    ll N, K;
    while(cin >> N >> K) {
        vi D(N); rep(i, N)cin >> D[i], --D[i];
        vi vis(N);
        int need = 0;
        rep(i, N)if(!vis[i]) {
            int x = i, y = 0;
            do {
                y++;
                vis[x] = 1;
                x = D[x];
            } while(x != i);
            need += y - 1;
        }
        K -= need;
        string ans = "YES";
        if(K < 0 || K % 2)ans = "NO";
        cout << ans << endl;
    }
}