# include <bits/stdc++.h>
using namespace std;
int main() {
# ifndef LOCAL
freopen("3cfc.in", "r", stdin);
freopen("3cfc.out", "w", stdout);
# endif
double a, b, c, d;
int times = 0;
cin >> a >> b >> c >> d;
for(int i = -10000; i <= 10000; i += 1) {
double x =i / 100.0;
double ans = ((a * x + b) * x + c) * x;
if(abs((ans * 100) - (-100 * d)) <= 0.001) {
printf("%.2f ", x);
times++;
if(times == 3) return 0;
i += 99;
}
}
return 0;
}