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