#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
int main(){
double a,b,c,delt;
cin>>a>>b>>c;
cout<<setiosflags(ios::fixed)<<setprecision(5);
delt = pow(b,2) - 4 * a * c;
if(delt < 0 || a == 0) cout <<"Impossivel calcular"<<endl;
else cout<<"R1 = "<< (-b + sqrt(delt))/(2*a) <<endl
<<"R2 = "<< (-b - sqrt(delt))/(2*a) <<endl;
//cout<<delt;
return 0;
}