#include <iostream>
using namespace std;

int main()
{
    //人数Nと操作Kを宣言
    int N;
    long K;
    
    cin >> N >> K;
    
    //数列用の動的配列を設定
    int* array = new int[N];                                                   //動的配列arrayを設定
    
    //arrayに数値を設定
    for (int i = 0; i < N; i++) {
        cin >> array[i];
    }
    
    
    
    
    //操作の必要最小回数を算出
    int operation = 0;
    
    for (int i = 0; i < N; i++) {
        if (array[i] == i + 1) {
            //何もしない
        } else {
            //i+1と同じ値が入ってる要素のindex
            int _i = i + 1;
            
            while (array[_i] != i + 1) {
                _i++;
            }
            
            array[_i] = array[i];
            
            operation++;
        }
    }
    
    //YESかNOかの判定
    if (operation > K || K % 2 != operation % 2) {
        cout << "NO" << endl;
    } else {
        cout << "YES" << endl;
    }
    
    delete[] array;                                                    //動的配列arrayを解放
    
    return 0;
}