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+ + = © = ( 0 , )
E l e m e n t w z o r c o w y = [ 0 , 1 ] j e s t t o t a k i e l e m e n t k t ó r y m a d Bu g o [ j e d n o s t k o w i p o Bo |e n i e j e g o
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+ =
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0 <