将机构散户公式中（红机构出现）做出选股公式

编写要求：

A1:=(DVOL/C)/2,NODRAW;A2:=SUM(IF(A1>100 AND CLOSE>REF(CLOSE,1),A1,0),0);A3:=SUM(IF(A1>100 AND CLOSEREF(CLOSE,1),A1,0),0);A5:=SUM(IF(A1<100 AND CLOSE0 AND REF(主力差,1)<=0,C*0.75,'●机构'),COLORRED;DRAWTEXT(主力差<0 AND REF(主力差,1)>=0,-C*0.75,'○机构'),COLORWHITE;DRAWTEXT(散户差>0 AND REF(散户差,1)<=0,C*0.25,'▲散户'),COLORCYAN;DRAWTEXT(散户差<0 AND REF(散户差,1)>=0,-C*0.25,'△散户'),COLORWHITE;谢谢志志老师，可真快

解答：

A1:=(DVOL/C)/2;