string readString(ifstream &stream, size_t nStrings, size_t index)
{
    stream.seekg((index + 1) * sizeof(uint16_t));
    size_t offset = read(stream);
    size_t size = read(stream) - offset;
    cout << "offset: " << offset << "; size: " << size << endl;
    stream.seekg(offset);
    char buffer[size];
    stream.read(buffer, size);
    for (size_t i = 0; i < size; i++)
        buffer[i] ^= nStrings;
    return buffer;
}