#include <stdio.h>
#include <math.h>

FILE *f,*g;
long A,B,C,p1,p2,q1,q2,k,ok;

void genereaza(void)
{
  if(q1==abs(C))
    {
	  q1=0-abs(C);
	  q2=C/q1;
      do
	   {
	     p1++;
	     if(p1==0)p1++;
	    }
      while(A%p1!=0);
	  p2=A/p1;
	}
  else
    {
      do
	   {
	    q1++;
	    if(q1==0)q1++;
	   }
      while(C%q1!=0);
	  q2=C/q1;
	}
}

int main()
{
  f=fopen("ecuatie.in","r");
  g=fopen("ecuatie.out","w");
  fscanf(f,"%ld %ld %ld %ld\n",&A,&B,&C,&k);
  /*
    P1 * P2 = A
    P1 * Q2 + P2 * Q1 = B
    Q1 * Q2 = C	
    */
  // initializez p1 si p2	
  p1=0-abs(A);
  p2=A/p1;
  //initializez q1 si q2
  q1=0-abs(C);
  q2=C/q1;
  if((p1*q2+p2*q1)==B)k--;
  while((k!=0)&&(A!=p1))
    {
	  genereaza();
	  if((p1*q2+p2*q1)==B)
	    k--;
	}
  if((k!=0)&&(A==p1))
    {
      fprintf(g,"-1\n");
      return 0;
    }
  //afisez prima parte	
  fprintf(g,"(");
  if(p1==1)
    fprintf(g,"x");
  else
    if(p1==-1)
      fprintf(g,"-x");
    else
      fprintf(g,"%ldx",p1);
  if(q1<0)
    fprintf(g,"%ld)",q1);
  else
    fprintf(g,"+%ld)",q1);

  //afisez a doua parte
  fprintf(g,"(");
  if(p2==1)
    fprintf(g,"x");
  else
    if(p2==-1)
      fprintf(g,"-x");
    else
      fprintf(g,"%ldx",p2);
  if(q2<0)
    fprintf(g,"%ld)",q2);
  else
    fprintf(g,"+%ld)",q2);
  fprintf(g,"\n");
  fclose(f);   fclose(g);
  return 0;
}