:
= 300
= 200
= 1
= 1/3 . .
( ) =1/3 . .
= 3 . .
= 1 . .
() = 1/4 . .
= 1/4 . .
=2 .
, 5-6 ., . , , , , .
, .
.
, 1 , , , .
, . , 2-3 , , . , 4 .