int main(){
float a, b, x;
cin >> a >> b;
x = -b/a;
cout << x;
}
int main(){
float a,b,c,delta,x1,x2;
cin >> a >> b >> c;
delta = b*b-4*a*c;
if(delta<0) cout << "Ec. nu are sol reale";
else {
x1 = (-b+sqrt(delta))/(2*a);
x2 = (-b-sqrt(delta))/(2*a);
cout << x1 << " " << x2;
}
}
