#include <iostream>
#include <fstream>
#include <vector>
#include <string>

struct Sorter {
private:
    std::vector<std::string> block; //a blocks
    std::size_t number;            //N
    std::size_t counter;           //K
public:
    Sorter();
    Sorter(std::string path);
    ~Sorter();
    std::string setBlock  (std::string node);
    std::size_t setNumber (std::size_t number );
    std::size_t setCounter(std::size_t counter);
    void setAllBlocks(std::fstream file, std::size_t start = 2);
    std::string getBlock();
    std::size_t getNumber();
    std::size_t getCounter();
    bool init(std::string path);
    Sorter& sort();
};

int main()
{
    Sorter sorter;
    std::string path_to_file = "C:\Users\Administrator\Desktop

\test.txt";
    std::size_t N, K;
    std::vector<std::string> vec;
    std::fstream file;
    file.open(path_to_file);
    file >> N;
    file >> K;
    std::cout << N << " " << K << "\n";

    file.close();
    return 0;
}

Sorter::Sorter() : number{0},
                   counter{0}
{}

Sorter::Sorter(std::string path)
{
    init(path);
}

Sorter::~Sorter()
{}

std::string Sorter::setBlock(std::string node)
{
    block.push_back(node);

    return node;
}

std::size_t Sorter::setNumber(std::size_t number)
{
    return this->number = number;
}

std::size_t Sorter::setCounter(std::size_t counter)
{
    return this->counter = counter;
}

void setAllBlocks(std::fstream file, std::size_t start)
{
    while ( !file.eof() ) {
        //write strings to blocks
        //////////////////////////////////////////////////////
    }
}

bool Sorter::init(std::string path)
{
    // like in main()
    std::fstream file;
    file.open(path);
    if (!file.is_open()) {
        return 1;
    }
    //////////////////////////////////////////////////////////////
    return 0;
}

Sorter& Sorter::sort()
{
    //////////////////////////////////////////////
    return *this;
}