#include <iostream>
#include <vector>
using namespace std;

int main() {
    int N, K; cin >> N >> K;
    vector<int> p(N), used(N);
    
    for(int i=0; i<N; i++) {
        cin >> p[i]; p[i]--;
    }
    
    int sum = 0;
    for(int i=0; i<N; i++) {
        int cnt = 0, idx = i;
        for(; used[idx] == false; idx = p[idx]) used[idx] = true, cnt++;
        if(cnt > 0) sum += cnt - 1;
    }
    
    if(sum <= K and K % 2 == sum % 2) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}