#include<bits/stdc++.h>
using namespace std;
const int INF=0x3f3f3f3f;
int const N=1e5+10;
double a,b,c;
int main(){
	cin>>a>>b>>c;
	double x1=(-b+sqrt(b*b-4*a*c))/(2*a),x2=(-b+-sqrt(b*b-4*a*c))/(2*a);
	if(a==0){
		cout<<"No answer!";
		return 0;
	}else if(b*b-4*a*c<0){
		cout<<"No answer!";
		return 0;
	}
	else if(x1==x2){
		cout<<"x1=x2="<<fixed<<setprecision(5)<<x1;
	}else if(x1<x2){
		cout<<"x1="<<fixed<<setprecision(5)<<x1<<";x2="<<fixed<<setprecision(5)<<x2;
	}else if(x1>x2){
		cout<<"x1="<<fixed<<setprecision(5)<<x2<<";x2="<<fixed<<setprecision(5)<<x1;
	}
	return 0;
}