3 ( ). : 1. , "" ( , ). 2. ( ). (), -> . ().
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( , , ..), . . ; -> . . " ". " 1" . " 1" , " 1" ; . |
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;
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. ; "", "". , 2D . | ||
, "". "" , 2D . / " " ; "". . . * . | ||
; . " ". . "" . " 0" ( ) . 12 .
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2
3 2
2: 1. . (). 2. ().
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, , , ( 3 "" ), . .
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