#include<stdio.h>
#include<math.h>
int main()
{
double a,b,c,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
x1=(-b+pow(b*b-4*a*c,0.5))/(2*a);
x2=(-b-pow(b*b-4*a*c,0.5))/(2*a);
if(b*b-4*a*c<0)printf("No answer!");
else if (b*b-4*a*c==0)printf("x1=x2=%.5f",x1);
else printf("x1=%.5f;x2=%.5f",x1,x2);  
}