#include <stdio.h>
#include <math.h>
int main(void) {
double a, b, c, D;
double x1, x2;
a = 0.0000000045;
b = 10;
c = 1;
D = b*b - 4*a*c;
if(D >= 0) {
x1 = (fabs(b) + sqrt(D)) / (2. * a);
x1 = b < 0 ? x1 : -x1;
if(D > 0) {
x2 = c / (a * x1);
printf("%lf, %lf\n", x1, x2);
} else {
printf("%lf\n", x1);
}
}
return 0;
}