#include <cstdio>
#include <cmath>
#define f(x) (((a*(x)+b)*(x)+c)*(x)+d)
const double eps = 1e-6;
double a, b, c, d, l, r, m, fl, fr, fm;
int main()
{
    scanf("%lf%lf%lf%lf", &a, &b, &c, &d);
    for (int i = -100; i < 100; i++)
    {
        l = i, r = i + 1 - eps;
        if (f(l)*f(r) > eps) continue;
        else while (r - l > eps)
        {
            m = (l + r) / 2;
            fl = f(l), fr = f(r), fm = f(m);
            if (abs(fl) < eps) { m = l; break; }
            else if (fl*fm < 0) r = m;
            else l = m;
        }
        printf("%.2f ", m);
    }
    return 0;
}