segments[0] = {1, 1, 1, 50000};
    segments[n - 1] = {50000, 1, 50000, 50000};
    for (int i = 2; i < n - 1; ++i) {
        //cin >> segments[i].x1 >> segments[i].y1 >> segments[i].x2 >> segments[i].y2;
        segments[i] = {i % 2, i, 50000, i};
    }