( )


        
 ,  , , .   
    2 ,    , 
    7 ,    , 
 ,     .   
  ,    ,   
   .      
,     ,    . 

 250,  40,  1/5 .,   5,  10, 
 1,  : - 15,   15,  10 
(  20    10). 
:
  •       

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