#include<stdio.h>
int a,b,c,d;
double solve[5];
int count=0;
double fx(double left)
{ double suml;
suml=a*left*left*left+b*left*left+c*left+d;

return suml;
}
int main(){
double num=0,j=-100;

scanf("%d%d%d%d",&a,&b,&c,&d);
while(j<=100)
{

if(fx(j)*fx(j+0.001)<0)
{
count++;
solve[count]=j;
j+=0.001;
}
else
j+=0.001;
}
for(i=1;i<=3;i++)
printf("%.2lf ",solve[i]);
return 0;
}