#include <bits/stdc++.h>   using namespace std;   int main() {     double a, b, c, delta, x1, x2;     cin >> a >> b >> c;     delta = b * b - 4.0 * a * c;     delta = sqrt(delta);     x1 = (-b + delta) / (2.0 * a);     x2 = (-b - delta) / (2.0 * a);     if (x1 < x2) swap(x1, x2);     cout << fixed << setprecision(8) << x1 << endl          << fixed << setprecision(8) << x2 << endl;     return 0;   }   