#include <iostream>
using namespace std;
int main() {
int code;
cin >> code;
// Write your safe delete + pointer reset logic here
int *p= new int;
*p= code;
cout<<*p<< " ";
delete p;
p = nullptr;
if(p == nullptr){
cout<<"OK";
}
else{
cout<<"NOT_OK";
}
return 0;
}