N1:=C=LLV(C,5) ; N11:=REF(N1,1) ; N2:= REF(C,1)<REF(O,1) AND REF(C,2)<REF(O,2) AND REF(C,3)<REF(O,3); N3:=C>REF(O,1); 超买:N11 AND N2 AND N3 ;
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