#include<bits/stdc++.h>
using namespace std;

int main(){
    int n,k;
    int circle_num=0;
    cin>>n>>k;
    int room=n;
    int d[n],used[n];
    for(int i=0; i<n; i++){
        int in;
        cin>>in;
        in--;
        d[i]=in;
        used[i]=0;
    }
    for(int i=0; i<n; i++){
        if(!used[i]){
            int next=i;
            while(!used[next]){
                used[next]=1;
                next=d[next];
            }
            circle_num++;
        }
    }
    cout<<((k-room+circle_num >= 0 && (k-room+circle_num)%2 == 0)?("YES"):("NO"))<<endl;
    return 0;
}