#include<iostream>
#include<cmath>
#include<iomanip>
using namespace std;
int main(){
	double a,b,c,D,x1,x2;
	cin>>a>>b>>c;
	D=b*b-4*a*c;
	if(D<=0){
		x1=(-b)/(2*a);
		D!=0?cout<<"No answer!":cout<<"x1=x2="<<setiosflags(ios::fixed)<<setprecision(5)<<x1;
	}
	else{
		x1=((-b)+sqrt(D))/(2*a);
	    x2=((-b)-sqrt(D))/(2*a);
		cout<<"x1="<<setiosflags(ios::fixed)<<setprecision(5)<<x1<<";"<<"x2="<<setiosflags(ios::fixed)<<setprecision(5)<<x2;
	}
	return 0;
}