import java.io.*;
public class vorrand
{
  public static void main(String[] argumendid)throws IOException
 {
    double a=1, b=-1, c=1, d=-30;
    double f=0, g=0, h=0, m=0, k=0, n=0;
    
    double x1=0, x2=0, x3=0;
    double R=0, i=0, j=0, l=0, p=0, S=0, T=0, U=0;
    
    
    
    f=(((3*c)/a) - (((b*b)/(a*a))))/3;
    System.out.println("f= "+f);
    g=((2*((b*b*b)/(a*a*a))-(9*b*c/(a*a)) + ((27*(d/a)))))/27;
    System.out.println("g= "+g);
    h=(((g*g)/4) + ((f*f*f)/27));
    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(- (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);
      System.out.println("x1= "+x1);
      System.out.println("x2= "+x2);
      System.out.println("x3= "+x3);
        
      }



    if (h>0)
      {
        
       f = (((3*c)/a) - ((b*b)/(a*a)))/3;
       System.out.println("f= "+f);
       g = ((2*(b*b*b)/(a*a*a)) - ((9*b*c)/(a*a)) + ((27*d)/a))/27;
       System.out.println("g= "+g);
       h = ((g*g)/4) + ((f*f*f)/27);
       System.out.println("h= "+h);
       R = -(g/2) + (Math.sqrt(h));
       System.out.println("R= "+R);
       S = (Math.pow(R, (1.0/3)));
       System.out.println("S= "+S);
       T = -(g/2) - (Math.sqrt(h));
       System.out.println("T= "+T);
       T=T*-1;
       U = (Math.pow(T, (1.0/3)));
       U=U*-1;
       System.out.println("U= "+U);
       x1 = (S + U) - (b/(3*a));
       System.out.println("X1= "+x1);
       x2 = (-(S + U)/2 - (b/(3*a)) + i*(S-U)*(Math.sqrt(3))/2);
       System.out.println("X2= "+x2);
       x3 = (-(S + U)/2 - (b/(3*a)) - i*(S-U)*(Math.sqrt(3))/2);
       System.out.println("X3= "+x3);
      


      }
    
    if(f==0 && g==0 && h==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("x1= "+x1);
    System.out.println("x2= "+x2);
    System.out.println("x3= "+x3);



    }

    
}
}