zad 1/11 PN

int main() {

    float a, b, R;
    printf_s("Podaj a i b: ");
    scanf_s("%f %f", &a, &b);
    R = (4 * a + 2 * ((a - b - 1) / (a*a + b * b + 1)));
    printf_s("%f", R);


    return 0;
}