#include <iostream>
#include <cmath>

using namespace std;

int main (){

double a, b, c;

cin >> a >> b >> c;

double discriminant =  (b * b) - (4 * a * c);


cout.precision(2);

if (discriminant < 0){
    cout << "no roots" << endl;
} else if (discriminant == 0){
    cout << (-b / 2 * a);
} else {
    cout << (-b + sqrt(discriminant)) / (2 * a) << " " << (-b - sqrt(discriminant)) / (2 * a);
}


return 0;
}