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