void makeTrail(std::ofstream& ofs, const int& amountOfVertices) {
    std::vector<int> verticesArr(amountOfVertices);
    for (size_t i = 0; i < amountOfVertices; ++i)
        verticesArr[i] = i;
    std::random_device rd;
    std::mt19937 g(rd());
    std::shuffle(verticesArr.begin(), verticesArr.end(), g);
    size_t k = 0;
    while ((k + 1) < amountOfVertices) {
        ofs << verticesArr[k] << ' ';
        ofs << verticesArr[++k] << std::endl;
    }
}

void makeTour(std::ofstream& ofs, const int& amountOfVertices) {
    std::vector<int> verticesArr(amountOfVertices);
    for (size_t i = 0; i < amountOfVertices; ++i)
        verticesArr[i] = i;
    std::random_device rd;
    std::mt19937 g(rd());
    std::shuffle(verticesArr.begin(), verticesArr.end(), g);
    size_t k = 0;
    while (true) {
        ofs << verticesArr[k] << ' ';
        if ((k + 1) != amountOfVertices)
            ofs << verticesArr[++k] << std::endl;
        else {
            ofs << verticesArr[0] << std::endl;
            break;
        }
    }
}