#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
	ll n,k;	cin>>n>>k;
	ll diff=0,same=0;
	for(int i=0;i<n;i++){
		int a;	cin>>a;
		if(a==i+1)	same++;
		else 	diff++;
	}
	if(diff>k+1)	cout<<"NO"<<endl;
	else if((k+1-diff)%2==0)	cout<<"YES"<<endl;
	else if(n>3)	cout<<"YES"<<endl;
	else 	cout<<"NO"<<endl;
	return 0;
}