#include<stdio.h>
int main ()
{
    float a,b,c,x,y,z,sqrt;
    scanf("%f%f%f",&a,&b,&c);
    x = (b*b)-(4*a*c);
    if (x<0)
        printf("Impossivel calcular\n");
    else if  (a == 0)
     printf("Impossivel calcular\n");
    else
        y = (-b+sqrt(x))/(a*a);
      z = (-b-sqrt(x))/(a*a);
      printf ("R1 = %f.5\n",y);
        printf ("R2 = %f.5\n",z);
        return 0;
}