TESTCASE # 1   E= 0           R$=[]          X= 0           Y= 0                
               F= 0           S$=[]                                             
*** TEST PASSED ***                                                             
TESTCASE # 2   E= 0           R$=[ ]         X= 1           Y= 1                
               F= 0           S$=[                                              
                                                                                
*** TEST FAILED, RESULT MISMATCH ***                                            
                                                                                
Program interrupted at line 1011                                                
