1.                                                         
                                          
2.                                                             
                                                     100           
3.                            360    
                    ,                   
4.                                                                                       
5.                                         1000                                           
6.                                                                                           
7.                                          
                                                
8.                                               
             1000                          
9.                                       
                         1000            
    
1        
2.          
3.         
4. 7. 8         
5.             
6. 2 . 3      
7.     
a          
b           
c             