bool is_prime (const vector
     
      & primes, int num){    for (const auto& prime : primes) {        if (num % prime == 0) {            return false;        }    }    return true;}vector
      
        get_primes (const int32_t& num){    vector
       
         primes;    primes.push_back (2);    int32_t vec_size = 1;    for (int32_t i = 3; vec_size != num; i += 2) {        if (is_prime (primes, i)) {            primes.push_back (i);            ++vec_size;        }    }    return move (primes);}