#include<stdio.h>   
  #include<math.h>   
    
  int   treat(float   a,float   b,float   c,float   d);   
  float   myF(int   flag,float   m,float   n);   
  void   myPrint(int   type,int   i,int   j,int   k,float   a,float   b,float   c,float   d);   
    
  int   time,temp=0;   
 int  main()   
  {   
  int   i,j,k,t,again,res,flag;   
  float   num[4];   
  again=1;   
  while(again==1)   
  {   
  printf   ("\nPlease   Enter   4   nums:\n");   
  i=0;   
  flag=0;   
  while   (flag==0)   
  {   
  i++;   
  // printf   ("Input   num-%d\n",i);   
  for(i=0;i<4;i++)   
  {   
  scanf("%f",&num[i]);   
  if   (num[i]<1   ||   num[i]>13   ||   num[i]!=int(num[i]))   
  flag++;   
  }   
  if(flag!=0)   
  {   
  printf   ("Error   input   again\n",i);   
  flag=0;   
  }   
  else   
  flag=1;   
  }   
  for   (i=0;i<4;i++)   
  for   (j=0;j<4;j++)   
  if   (j!=i)   
  for   (k=0;k<4;k++)   
  if   (k!=j   &&   k!=i)   
  for   (t=0;t<4;t++)   
  if   (t!=i   &&   t!=j   &&   t!=k)   
  {   
  res=treat(num[i],num[j],num[k],num[t]);   
  }   
  if   (res==0)   
  printf   ("\nNo   answer\n");   
  else   ;   
  // printf   ("time=%d\n\n",time);   
  printf   ("\n1:   Go   on\n2:   Quit\n");   
  scanf   ("%d",&again);   
  }   
  }   
   int   treat(float   a,float   b,float   c,float   d)   
  {   
  int   i,j,k;   
  float   sum1,sum2,sum3;   
  for   (i=0;i<4;i++)   
  for   (j=0;j<6;j++)   
  for   (k=0;k<6;k++)   
  {   
  if   ((!(i==3   &&   b==0))   &&   (!(j==3   &&   c==0))   &&   (!(k==3   &&   d==0)))   
  {   
  sum1=myF(i,a,b);   
  sum2=myF(j,sum1,c);   
  sum3=myF(k,sum2,d);   
  if   (fabs(sum3-24)<0.1)   
  {   
  temp++;   
  myPrint(1,i,j,k,a,b,c,d);   
  // printf   ("sum1:myF(%d,%2.0f,%2.0f)     sum1=%f\n",i,a,b,sum1);   
  // printf   ("sum2:myF(%d,%2.0f,%2.0f)     sum2=%f\n",j,c,d,sum2);   
  // printf   ("1:myF(%d,myF(%d,myF(%d,%2.0f,%2.0f),%2.0f),%2.0f)       sum3=%f\n\n",k,j,i,a,b,c,d,sum3);   
  }   
  }   
  if   (k==2)   
  {   
  sum1=myF(i,a,b);   
  sum2=myF(j,c,d);   
  sum3=sum1*sum2;   
    if   (fabs(sum3-24)<0.1)   
  {   
  temp++;   
  myPrint(2,i,j,k,a,b,c,d);   
  // printf   ("sum1:myF(%d,%2.0f,%2.0f)     sum1=%f\n",i,a,b,sum1);   
  // printf   ("sum2:myF(%d,%2.0f,%2.0f)     sum2=%f\n",j,c,d,sum2);   
  // printf   ("2:myF(%d,myF(%d,%2.0f,%2.0f),myF(%d,%2.0f,%2.0f))       sum3=%f\n\n",k,i,a,b,j,c,d,sum3);   
  }   
  }   
    
  if   (k==3)   
  {   
  sum1=myF(i,a,b);   
  sum2=myF(j,c,d);   
  if   (sum2!=0)   
  {   
  sum3=sum1/sum2;   
    if   (fabs(sum3-24)<0.1)   
  {   
  temp++;   
  myPrint(3,i,j,k,a,b,c,d);   
  // printf   ("sum1:myF(%d,%2.0f,%2.0f)     sum1=%f\n",i,a,b,sum1);   
  // printf   ("sum2:myF(%d,%2.0f,%2.0f)     sum2=%f\n",j,c,d,sum2);   
  // printf   ("3:myF(%d,myF(%d,%2.0f,%2.0f),myF(%d,%2.0f,%2.0f))       sum3=%f\n\n",k,i,a,b,j,c,d,sum3);   
  }   
  }   
  }   
  }   
  if   (temp==0)   
  return   0;   
  else   
  return   1;   
  }   
    
  float   myF(int   flag,float   m,float   n)   
  {   
  // time++;   
  if   (flag==0)   
  return   (m+n);   
  if   (flag==1)   
  return   (m-n);   
  if   (flag==2)   
  return   (m*n);   
  if   (flag==3)   
  if   (n==0)   
  return   30000;   
  else   
  return   (m/n);   
  if   (flag==4)   
  return   (n-m);   
  if   (flag==5)   
  if   (m==0)   
  return   30000;   
  else   
  return   (n/m);   
  return   0;   
  }   
    
  void   myPrint(int   type,int   i,int   j,int   k,float   a,float   b,float   c,float   d)   
  {   
  char   sigle[6];   
  sigle[0]='+';   
  sigle[1]='-';   
  sigle[2]='*';   
  sigle[3]='/';   
  sigle[4]='-';   
  sigle[5]='/';   
  if   (type==1){   
  if(j==4   ||   j==5)   
  {   
  if   (k==4   ||   k==5)   
  printf("%2.0f   %c   (%2.0f   %c   (%2.0f   %c   %2.0f))   =24\n",d,sigle[k],c,sigle[j],a,sigle[i],b);   
  else   
  printf("(%2.0f   %c   (%2.0f   %c   %2.0f))   %c   %2.0f   =24\n",c,sigle[j],a,sigle[i],b,sigle[k],d);   
  }   
  else   if   (k==4   ||   k==5)   
  {   
  printf("%2.0f   %c   ((%2.0f   %c   %2.0f)   %c   %2.0f)   =24\n",d,sigle[k],a,sigle[i],b,sigle[j],c);   
  }   
  else   
  printf("((%2.0f   %c   %2.0f)   %c   %2.0f)   %c   %2.0f   =24\n",a,sigle[i],b,sigle[j],c,sigle[k],d);   
  }   
  if   (type==2   ||   type==3)   
  {   
  // if   (k==4   ||   k==5)   
  // printf("(%2.0f   %c   %2.0f)   %c   (%2.0f   %c   %2.0f)=24\n",c,sigle[j],d,sigle[k],a,sigle[i],b);   
  // else   
  printf("(%2.0f   %c   %2.0f)   %c   (%2.0f   %c   %2.0f)   =24\n",a,sigle[i],b,sigle[k],c,sigle[j],d);   
  }   
  }