# include <iostream.h>
 # include <fstream.h>
 # include <string.h>
 # include <stdlib.h>
 # include <conio.h>

 int main( )
    {
       clrscr( );

       fstream File("CP-26.txt",ios::in|ios::nocreate);

       if(!File)
      {
         cout<<"\n Unable to open the input file."<<endl;
         cout<<"\n Press any key to exit.";

         getch( );
         exit(EXIT_FAILURE);
      }

       char Data[60]={NULL};
       char Temp[60]={NULL};
       char Operator[60]={NULL};
       char Result[60]={NULL};


       File.getline(Data,50);

       int test_cases=atoi(Data);

       for(int count=1;count<=test_cases;count++)
      {
         strset(Data,NULL);

         File.getline(Data,50);

         strrev(Data);

         do
        {
           strset(Temp,NULL);
           strset(Result,NULL);
           strset(Operator,NULL);

           File.getline(Operator,50);

           if(strcmp(Operator,"=")==0)
              break;

           File.getline(Temp,50);

           strrev(Temp);

           while(strlen(Temp)<strlen(Data))
              strcat(Temp,"0");

           while(strlen(Data)<strlen(Temp))
              strcat(Data,"0");

           int length=strlen(Data);

           if(strcmp(Operator,"+")==0)
              {
             int carry=0;
             int sum=0;
             int digit_1=0;
             int digit_2=0;

             char Sum[5]={NULL};

             for(int i=0;i<length;i++)
                {
                   digit_1=(int(Data[i])-48);
                   digit_2=(int(Temp[i])-48);

                   sum=(digit_1+digit_2+carry);

                   if(sum>9)
                  {
                     sum%=10;
                     carry=1;
                  }

                   else
                  carry=0;

                   itoa(sum,Sum,10);

                   strcat(Result,Sum);
                }

             if(carry)
                strcat(Result,"1");

             strset(Data,NULL);
             strcpy(Data,Result);
              }

           elseif(strcmp(Operator,"-")==0)
              {
             int borrow=0;
             int difference=0;
             int digit_1=0;
             int digit_2=0;

             char Difference[5]={NULL};

             for(int i=0;i<length;i++)
                {
                   digit_1=(int(Data[i])-48);
                   digit_2=(int(Temp[i])-48);

                   difference=(digit_1-digit_2-borrow);

                   if(difference<0)
                  {
                     difference+=10;
                     borrow=1;
                  }

                   else
                  borrow=0;

                   itoa(difference,Difference,10);

                   strcat(Result,Difference);
                }

             strset(Data,NULL);
             strcpy(Data,Result);
              }
        }
         while(1);

         strrev(Data);

         cout<<Data<<endl;

         File.getline(Data,50);
      }

       File.close( );

       getch( );
       return 0;
    }