#include <iostream>
#include <iomanip>
#include <cstdint>
using namespace std;

void print_in_hex(uint8_t byte) {
    cout << hex << setw(2) << setfill('0') << static_cast<int>(byte) << " ";
}

void print_in_hex(const void* data, size_t size) {
    const uint8_t* bytes = static_cast<const uint8_t*>(data);
    for (size_t i = 0; i < size; ++i) {
        print_in_hex(bytes[i]);
        if ((i + 1) % 16 == 0) cout << endl;
    }
    cout << endl;
}

void print_in_binary(uint8_t byte) {
    for (int i = 7; i >= 0; --i) cout << ((byte >> i) & 1);
    cout << " ";
}

void print_in_binary(const void* data, size_t size) {
    const uint8_t* bytes = static_cast<const uint8_t*>(data);
    for (size_t i = 0; i < size; ++i) {
        print_in_binary(bytes[i]);
        if ((i + 1) % 4 == 0) cout << endl;
    }
    cout << endl;
}

int main() {
    uint8_t data[] = {0xDE, 0xAD, 0xBE, 0xEF, 0x12, 0x34, 0x56, 0x78};
    size_t size = sizeof(data);

    cout << "Hexadecimal representation:" << endl;
    print_in_hex(data, size);

    cout << "Binary representation:" << endl;
    print_in_binary(data, size);

    return 0;
}