题目题目描述原题
英文题目Chinese people think of ‘$8$’ as the lucky digit. Bob also likes digit ‘$8$’. Moreover, Bob has his own l
                                
                            
                            
                                
                                    2020-05-31
                                
                                
                            
                         
                                
                                 
                                
                                 
                                
                                 
                                
                                 
                                
                                 
                                
                                 
                                
                                 
                                
                                