#include using namespace std; typedef long long LL; struct cww{cww(){ ios::sync_with_stdio(false);cin.tie(0); cout<inline void chmin(T &l,T r){l=min(l,r);} template inline void chmax(T &l,T r){l=max(l,r);} template istream& operator>>(istream &is,vector &v){ for(auto &it:v)is>>it; return is; } int main(){ LL N,K; cin>>N>>K; vector v(N); cin>>v; vector used(N,0); LL f=0; REP(i,N)if(!used[i]){ used[i]=1; int sz=1; for(int u=v[i]-1;!used[u];u=v[u]-1) used[u]=-1,sz++; if(sz>2)f=1; K-=sz-1; } if(K>=0&&K%2==0)cout<<"YES"<=0&&f)cout<<"YES"<