Задание № 21
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Array ( [0] => Array ( [0] => Array ( [0] => 9 ) ) [1] => Array ( [0] => Array ( [0] => 2 ) ) )
Array ( [0] => Array ( [0] => Array ( [0] => 9 ) ) [1] => Array ( [0] => Array ( [0] => 2 ) ) )