暴力出奇迹！！！

rt，数据范围很小，暴力一遍过
应该都会做吧

#include<bits/stdc++.h>
#define int long long
using namespace std;
double a,b,c,d,cnt;
double f(double x)
{
	return (a*pow(x,3))+(b*pow(x,2))+(c*x)+d;
}
signed main()
{
	cin>>a>>b>>c>>d;
	for(double i=-100;i<=100;i+=0.001)
	{
		if(cnt>=3)
		{
			break;
		}
		if(f(i)*f(i+0.001)<0)
		{
			printf("%.2f ",i);
			cnt++;
		}
	}
	return 0;
}