import java.io.*;
public class kuup{
  public static void main(String argumendid[]) throws IOException{
    BufferedReader klaviatuur=new BufferedReader(
     new InputStreamReader(System.in)
    );
    double a=2, b=-4, c=-22, d=24;
    int saba=-100;
    double i, j, K, L, M, N, P, R, S, T, U;
    double x1=0, x2=0, x3=0;

    double f=((3.0*c/a)-(b*b)/(a*a))/3.0;
    double g = ( (2.0*Math.pow(b, 3)/Math.pow(a, 3)) - (9.0*b*c/Math.pow(a, 2)) + (27.0*d/a) )/27.0;

    double h = (Math.pow(g, 2)/4.0) + (Math.pow(f, 3)/27.0);
     System.out.println("f="+f);
     System.out.println("g="+g);
     System.out.println("h="+h);

   if(h <= 0){ 
     i=Math.sqrt(((g*g)/4)-h);
     j=Math.pow(i, (1.0/3)); 
     K=Math.acos(-1*(g / (2*i))); 
     L=(j * -1);
     M=Math.cos(K/3);
     N=(Math.sqrt (3)) * Math.sin(K/3);
     P=((b/(3*a)) * -1);
     x1=(2*j) * (Math.cos(K/3))-(b/(3*a));
     x2=(L*(M+N))+P;
     x3=(L*(M-N))+P;
     System.out.println("i="+i);
     System.out.println("j="+j);
     System.out.println("K="+K);
     System.out.println("L="+L);
     System.out.println("M="+M);
     System.out.println("N="+N);
     System.out.println("P="+P);
   }
    
    if (h>0){
      f=((3*c/a)-((b*b)/(a*a)))/3;
      g=((2.0*Math.pow(b, 3)/Math.pow(a, 3))-(9.0*b*c/Math.pow(a, 2))+(27.0*d/a))/27.0;
      h=(Math.pow(g, 2)/4.0)+(Math.pow(f, 3)/27.0);
      R=-1*(g/2.0)+Math.pow(h, (1.0/2.0));
      S=Math.pow(R, (1.0/3.0));
      T=-1*(g/2.0)-Math.pow(h, (1.0/2.0));
      T=T*-1.0;
      U=Math.pow(T, (1.0/3.0));
      U=U*-1.0;
      x1=(S+U)-(b/(3*a));
      x2=-1.0*((S+U)/2.0)-(b/(3*a));
      x3=-1.0*((S+U)/2.0)-(b/(3*a));
     System.out.println("f="+f);
     System.out.println("g="+g);
     System.out.println("h="+h);
     System.out.println("R="+R);
     System.out.println("S="+S);
     System.out.println("T="+T);
     System.out.println("U="+U);

    }
    if(h==0 && g==0 && f==0){
      x1=Math.pow((d/a), (1.0/3))*-1;
      x2=Math.pow((d/a), (1.0/3))*-1;
      x3=Math.pow((d/a), (1.0/3))*-1;
    }
    System.out.println(a+" "+b+" "+c+" "+d);
    System.out.println("x1="+x1);
    System.out.println("x2="+x2);
    System.out.println("x3="+x3);
  }
}