#include <bits/stdc++.h>   using namespace std;   double a, b, c;   int main() {     while (~scanf( %lf%lf%lf , &a, &b, &c)) {       double x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a),              x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a);       if (a < 0) swap(x1, x2);       printf( %.6lf n%.6lf n , x1, x2);     }     return 0;     ;   }   