     
                                    30                       
                      10                                                                                              
                                                                      
                                                           
                
                            
  
                    
                  
              
                
               
             
             
             
              
            
                
              
              
              
              
               
              
             
               
            
           
            
               
                  
          
                  
              
              
             
           
            
             
              
            
            
            
             
              
             
                 
              
            
               
            
               
            
              
            
              
             
            
           
             
           
              
             
           
              
             
            
            
              
           
             
            
             
            
             
            
             
             
              
              
              
               
              
             
             
            
             
            
             
                 
              
               
               
            
                
                 
                 
                
                 
                 
               
                
               
              
            
            
             
               
               
              
              
              
              
              
              
                
                
              
          .    
                
               
                
              
                
              
                       
                2  
                 
              
                  
                
                  
                  
                
                 
                
                
               
                
                
                 
              
              
              
               
                  
                  
               
                
                   
                 
                
               
                 
                   
                
                 
                
              
               
                 
                    
                   
                    
                     
                   
                     
                    
                   
                  
                 
                 
                 
                 
                  
                 
                  
                
                  
                     
                
                    
               
                 
                 
                
                  
                 
                  
                  
                
                   
                
                  
                 
                  
                
                   
                 
                  
                    
                    
                     
                     
                   
                   
                   
                      
                 
                   
                    
                    
                   
                   
                    
                   
                  
                 
                    
                      
                     
                    
                     
                    
                    
                    
                    
                  
                   
                     
                      
                     
                     
                   
                   
                      
                   
                    
                    
                    
                    3  
                      
                        
                    
                  
                    
                    
                   
                    
                  
                
                
                  
                       
                   
                  
                 
                 
                  
                 
                  
                    
                 
                  
                  
                  
                  
                   
                   
                    
                   
                  
                 
                    
                     
                    
                    
                   
                  
                      
                    
                       
                   
                      
                  
                   
                  
                     
                      
                     
                 
                  
                    
                    
                    
                     
                     
                      
                        
                        