#include <iostream>
#include <math.h>
#include<iomanip>
using namespace std;
int main()
{
    double x,y,a,b,c;
    cin>>a>>b>>c;
    if (a==0)
    {
        cout<<"No answer!";
        return 0;
    }
    x=(sqrt(b*b-4*a*c)-b)/(2*a);
    y=(-sqrt(b*b-4*a*c)-b)/(2*a);
    if (x>y){
        swap(x,y);
    }
    if (fabs(x-y)<1e-6)
    {
        cout<<"x1=x2="<<fixed<<setprecision(5)<<x<<endl;
    }
    else
    {
        cout<<"x1="<<fixed<<setprecision(5)<<x<<";x2="<<fixed<<setprecision(5)<<y<<endl;
    }
}