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

int main()
{
float a,b,c,d,e,f;
cin>>a>>b>>c;
d=b*b-4*a*c;
e=(-b+sqrt(d))/(2*a);
f=(-b-sqrt(d))/(2*a);
if (d>0)
cout<<"有兩個根,為"<<e<<"," <<f<<endl;
else if (d==0)
cout<<"有一個根,為"<<e<< endl;
else if (d<0)
cout<<"沒有實根"<< endl;

system("pause");
return 0;
}