#include <bits/stdc++.h>
using namespace std; 
int main ()
{
	float a,b,c;
	double q;
	cin>>a>>b>>c;
		if((b*b-4*a*c)>0)
	   {	q=sqrt(b*b-4*a*c);
	   		if(a<0)
	   		printf("x1=%.5lf;x2=%.5lf",(-b+q)/(2*a),(-b-q)/(2*a));
	   		if(a>0)
	   		printf("x1=%.5lf;x2=%.5lf",(-b-q)/(2*a),(-b+q)/(2*a));
		} 
		else if((b*b-4*a*c)==0)
			printf("x1=x2=%.5lf",-b/2*a);
    		else printf("No answer!");
    return 0;
}