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