- -0.5 -1 -2 ( 1 , ) -2 .-2 . -0.5 . -1 . -1 11 ( 50 ) +-500 -250 , -0.5 , , . , ,,. ,, ,. 40 , . , . , . , , ,, ,
" ": 1 - _ 2 - "- " 3 - - - , !!!