#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    double a,b,c,x1,x2;
    scanf("%lf %lf %lf",&a,&b,&c);
    x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a);
    x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a);
    double res = b * b - 4 * a * c;
    if(res < 0){
        printf("No answer!");
    }else 
        if(res == 0){
            printf("x1=x2=%.5lf",x1);
        }else
            if(res > 0){
                if(x1 > x2){
                    swap(x1,x2);
                }
                printf("x1=%.5lf;x2=%.5lf",x1,x2);
            }else printf("No answer!");
    return 0;
}