#include<cstdio>
#include<iostream>
#include<cmath>
using namespace std;
int main(){
double a,b,c;
cin >> a >> b >> c;
double delta = b*b-4*a*c;
if(delta > 0 && a!=0){ //该行输出要求a!=0
printf("R1 = %.5lf\nR2 = %.5lf",(-b+sqrt(delta))/(2*a),(-b-sqrt(delta))/(2*a));
}else if(delta < 0 || a == 0){
printf("Impossivel calcular"); //注意a等于0或者不等于0的讨论
}
return 0;
}