#include <iostream>
#include <cstdint>

using namespace std;

// Hash function for pointers using reinterpret_cast
template <typename T>
struct PointerHash {
    size_t operator()(const T* pointer) const {
        uintptr_t addr = reinterpret_cast<uintptr_t>(pointer);

        // Ensure the address fits within size_t
        #if SIZE_MAX < UINTPTR_MAX
            addr %= SIZE_MAX;
        #endif

        return addr;
    }
};

int main() {
    int x = 10;
    int* ptr = &x;

    PointerHash<int> hash_func;
    size_t hash_value = hash_func(ptr);

    cout << "Hash value: " << hash_value << endl;

    return 0;
}