:
. !
.
— 0,5
— 150
( -1; -2) — 3
— 1 .
( )
( ) — 250
, , .
,
, .
3-4 .
5-10 .
1-1,5 .
, ,
!
http://bljudo.blogspot.com/2015/04/blog-post_41.html#more