. . , 15.
– 400.
– 80.
– 1 .
– 1/2..
400, 1 , , . 80 .
.
, .
. 5 . 5-10 . .
!
" ": 1 - ! 2 - 3 - 4 - 5 - 15 ! 6 - 7 - 20