import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        long K = sc.nextLong();
        int [] D = new int [N+1];
        for(int i=1; i<=N; i++){
            D[i] = sc.nextInt();
        }
        int c=0;
        for(int i=1; i<=N; i++){
            if(i!=D[i]){
                int tmp = D[i];
                D[i] = D[tmp];
                D[tmp] = tmp;
                c++;
            }
        }
        boolean b = true;
        if(c>K||K-c==1)b = false;
        if(b){
            System.out.println("YES");
        }else{
            System.out.println("NO");
        }
    }
}