bool f_sumaWazona(double &s, const double *b, const double *e, const double *a) {

    if (b < e && *(b + i3) >= 0) {
        sum3 += *(a + i3) * *(b + i3);
        sum4 += *(b + i3);
        ++i3;
        f_sumaWazona(s, b, e, a);
    }

    if (sum4 <= 1) {
        s = (double) sum3 + a[e - b] * (1 - sum4);
        return true;
    } else
        return false;

}