#include <stdio.h>
#include <math.h>
int main()
{
    double a,b,c,d,x1,x2,max,min;
    scanf("%lf %lf %lf",&a,&b,&c);
    d=b*b-4*a*c;x1=(-b+sqrt(d))/(2*a);x2=(-b-sqrt(d))/(2*a);
    if(x1==x2){printf("x1=x2=%.5f",x1);}else{
    if(x1<x2){max=x2;min=x1;}else{max=x1;min=x2;};
    if(d<0){printf("No answer!");};
    if(d>0){printf("x1=%.5f;x2=%.5f",min,max);};}
    return 0;
}