#include<iostream>
#include<math.h>
#include<iomanip>
using namespace std;
int main(){
	double a,b,c;
	cin>>a>>b>>c;
	double ans1;
	ans1=b*b-4*a*c;
	if(ans1<0){
		cout<<"No answer!";
		return 0;
	}
	if(ans1==0){
		cout<<"x1=x2="<<fixed<<setprecision(5)<<(sqrt(ans1)-b)/(2*a)<<';';
	}else{
		cout<<"x1="<<fixed<<setprecision(5)<<min((-b+sqrt(ans1))/(2*a),(-b-sqrt(ans1))/(2*a))<<';';
		cout<<"x2="<<fixed<<setprecision(5)<<max((-b+sqrt(ans1))/(2*a),(-b-sqrt(ans1))/(2*a));
	}
	return 0;
}