#include<stdio.h>
#include<math.h>
int main()
{
int a,b,c,t;
double p,q,d,x1,x2;
scanf("%d%d%d",&a,&b,&c);
t=b*b-4*a*c;
if(t==0)
{
x1=-b/2*a*1.0;
x2=x1;
printf("x1=%.3f x2=%.3f\n",x1,x2);
}
else if(t>0)
{
d=sqrt(t);
x1=(-b+d)/2*a;
x2=(-b-d)/2*a;
printf("x1=%.3f x2=%.3f\n",x1,x2);
}
else
{
p=-b/(2.0*a);
q=sqrt(-t)/(2.0*a);
printf("x1=%.3f+%.3fi x2=%.3f-%.3fi\n",p,q,p,q);
}
return 0;
}