#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;
using ll = long long int;

int main()
{
    ll N, K, cnt = 0;
    cin >> N >> K;
    vector<ll> vec(N + 1, 0);
    for(int i = 1; i <= N; i++)
        cin >> vec[i];
    
    for(int i = 1; i <= N; i++)
    {
        while(vec[i] != i)
        {
            swap(vec[i], vec[vec[i]]);
            cnt++;
        }
    }

    

    cout << ((cnt <= K && (K - cnt) % 2 == 0) ? "YES" : "NO") << endl; 

}