#include <iostream>
#include <cmath>
using namespace std;

int main() {
    double a;
    double b;
    double c;
    double x1, x2, D;
    cin >> a >> b >> c;
    D = (b * b - 4 * a * c);
    // if 1 element == 0
    // a == 0
    if (a == 0 && (b != 0 && c!=0))
    {
        c = c*-1;
        cout << c/b;
        return 0;
    }
    // b == 0
    else if  (b == 0 && (a != 0 && c!=0))
    {
        c = c*-1;
        if (c/a > 0){
            cout << pow(c/a,0.5);
        }
        return 0;
    }
    // if 2 elements == 0
    // a,b == 0
    else if  (a == 0 && b ==0)
    {
        return 0;
    }
    // b,c == 0
    else if  (b == 0 && c ==0)
    {
        return 0;
    }
    // a,c == 0
    else if  (a == 0 && c ==0)
    {
        return 0;
    }

    else {
        if (D >= 0) //Если дискриминант больше или равен 0
        {
            D = pow(D, 0.5);
            a = 2 * a;
            x1 = (-1 * b + D) / a;
            x2 = (-1 * b - D) / a;
            if (x1==x2){
                cout  << x2 << endl;
            }
            else{
                cout << x1 << " " << x2 << endl;
            }
        } else {
            cout << endl;
        }
    }

    return 0;
};