29. Reset Fault Buffer

#include <iostream>
using namespace std;

int main() {
    int code;
    cin >> code;

    // Write your safe delete + pointer reset logic here
    int *ptr = new int(code);
    cout << code << " ";

    delete ptr;
    ptr = nullptr;

    cout << (ptr == nullptr ? "OK" : "NOT_OK");

    return 0;
}