HashFunction HashFunction::getHashCoefs(const int k_value, const int prime_module) {
    using std::uniform_int_distribution;
    static uniform_int_distribution<int> distribution(0, prime_module - 1);
    static uniform_int_distribution<int> distribution_for_previous_coef(1, prime_module - 1);
    static std::default_random_engine generator;
    vector<int64_t> coefs;
    for (size_t i = 0; i < k_value - 1; ++i) {
        coefs.push_back(distribution(generator));
    }
    coefs.push_back(distribution_for_previous_coef(generator));
    return HashFunction(coefs, prime_module);
}