#include<stdio.h>
#include<math.h>
int main(){
	double a,b,c,x1,x2,d;
	scanf("%lf %lf %lf",&a,&b,&c);
	d=b*b-4*a*c;
	if(d<0){
	printf("No answer!");
}
	else{
	x1=(-b+sqrt(d))/(2*a);
	x2=(-b-sqrt(d))/(2*a);
	if(x1==x2){
	printf("x1=x2=%.5lf",x1);
}
	else{
	printf("x1=%.5lf;x2=%.5lf",x1,x2);
}
}
	return 0;
}