#include <iostream>
#include "gmp/gmp.h"
#include "gmp/gmpxx.h"
#include <vector>
#include <stdio.h>
#include <fstream>
#include <string>

int main()
{
        std::cout << "reading data\n";

        std::vector<int> data;

        std::ifstream file;
        std::string line;

        file.open("out.txt");
        if (!file.is_open())
        {
                std::cout << "failed to open\n";
        }
        while (file)
        {
                std::getline(file, line);
                if(line.size() > 5)
                {

                        data.push_back(std::stoi(line));
                }
        }

        file.close();
        std::cout << "data has been read. vector length: " << data.size() << '\n';

        int count = 0;

        for(unsigned long  int i = 0; i < data.size(); i++)
        {

                std::cout << i << " iter\n";
                uint64_t num = data[i];
                mpz_t res;
                mpz_init(res);
                mpz_ui_pow_ui(res, 2, num);
                mpz_sub_ui(res, res, 1);
                std::cout << "start\n";
                int is_prime = mpz_probab_prime_p(res, 5);
                std::cout << "stop\n";
                if(is_prime == 2)
                {
                        std::cout << "for sure prime: exp: " << num << '\n';
                }
                else if (is_prime == 1)
                {
                        std::cout <<" maybe prime: exp: " << num << '\n';
                }
        }
}