1131.cpp

#include<stdio.h>
#include<math.h>

void function(double a,double b,double c);
/*------------------------------------------------*/

int main() {
    double a, b, c;
    while ( scanf("%lf%lf%lf", &a, &b, &c) != EOF) {
        function(a, b, c);
    }
    return 0;
}

/*------------------------------------------------*/
void function(double a,double b,double c) {
    double x1, x2;

    if ( pow(b, 2) - 4 * a * c > 0 ) {
        x1 = (- b + sqrt(pow(b, 2) - 4 * a * c)) / (2 * a);
        x2 = (- b - sqrt(pow(b, 2) - 4 * a * c)) / (2 * a);
    }

    if ( pow(b, 2) - 4 * a * c == 0 ) {
        x1 = (- b) / (2 * a);
        x2 = x1;
    }

    printf("%.2f %.2f\n", x1, x2);
}