                . 
   "" -    ,    .   ""
     .      0     
  ,     ""    .  ""  
    .         0   .
          -        .
      "  ".     "  ",  
       -  1.0   ,  
       ,  ( -  1)  ""   0.5(75),
     "",   1.0 -      - ( 1  50),
 -         1 (.  ) 
 "",  0.0 ,     ,       .
  -  ,      ,  2  .

      50.
1 - 1
2 - 2
3 - 3
4 - 4
5 - 5
6 - 6
7 - 7
8 - 8
9 - 9
10 - 10
11 - 11
12 - 12
13 - 13
14 - 14
15 - 15
16 - 16 

 U/f   1500. (    )
