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64
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(28522738 ..)
- 180 - , - ,
: 6,7,8,9 : 1,2,3,4: 5,5,5,5 , : 1 : 4+9+2=15=4+3+8 : 1 2 : 3+5+7=15=9+5+7 : 2 3 : 8+1+6=15=2+7+6 : 3 1 : 4+5+6=15=2+5+8 : 2
: :
5
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,
, 4- = 4- = 4- -
x \ yx & y xy \ xx ~ y yx yx yyx D yy xxx yx y
4- = 4- = 4-
}
f (x, y)
8 5