>> 5 .

7.


,

()

, (. 21). (. 22).

. 15 : (4, 1), (4, 2), (1, 2), D(4, 5), (2, 5), F(4, 7), G(3, 7), (5, 9), I(7, 7), J(6, 7), (8, 5), L(6, 5), (9, 2), N(6, 2), O(6, 1). , D F G I J L N , 23.

, 15 , . , .

. , .

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