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24 ( ) 22 ( ) 21 ( ) 20 ( )
1() [AMC81999] (
: 5 19992000 )
4 () )
21 ( ) 2( ) 3( ) [AMC82000] (
. 42 )
1() 17 ( ) .
. 15 ( )
2π 5 16 ( ) [AMC82000] (
3 −2 ( )
0( ) −1 ( )
5()
[AMC82000] ( )
4( ) 3( ) 2 ()
[AMC82000] ( )
{−8,−6,−4, 0, 3, 5,7 }
−192 ( ) −210 ( ) −280 ( ) −336 ( )
⊗ [AMC82000] ( )
)
.a ⊗ b = a2 :
b
(1 ⊗ 2) ⊗ 3 − 1 ⊗ (2 ⊗ 3)
1() 0( ) −1 ( ) −2 ( )
4 300 4 3
. [AMC82001] (
