1036.java

import java.io.IOException;
import java.util.Scanner;

public class Main {
 
    public static void main(String[] args) throws IOException {
 
        double A, B, C;
        double delta, R1, R2;
        
        Scanner sc = new Scanner(System.in);
        
        A = sc.nextDouble();
        B = sc.nextDouble();
        C = sc.nextDouble();
        
        delta = B*B - 4*A*C;
        
        if (delta < 0 || A == 0) {
            System.out.println("Impossivel calcular");
        } else {
            R1 = (-B + Math.sqrt(delta)) / (2*A);
            R2 = (-B - Math.sqrt(delta)) / (2*A);
            System.out.printf("R1 = %.5f\n", R1);
            System.out.printf("R2 = %.5f\n", R2);
        }
    }
 
}