#include <cstdio>
#include <iostream>


struct Item
{
    Item *next;
    long long value;
};

class Arena {
public:
    Arena(const Arena&) = delete;
    Arena &operator=(Arena other) = delete;

    Item *arr;
    bool *arr_vacant;

    explicit Arena(size_t size) {
        Item *arr = new Item[size];
        bool *arr_vacant = new bool[size];

        for (int i = 0; i < size; ++i) {
            arr_vacant[i] = false;
        }

        std::cout<<sizeof(arr);
    }

    // ~Arena() {
    //     delete arr;
    //     delete arr_vacant;
    // }

    Item *get();


    void put(Item *);

};


int main()
{
    Arena t(10);
}