Ask the teacher to help me change a stock selection formula: (original code)

n:= 26； m 1:= 10； M2:= 20；

MID:=REF (high+low,1)/2;

CR:=SUM(MAX(0, medium high), N)/SUM(MAX(0, medium low), n) *100;

MA 1:=REF(MA(CR，M 1)，m 1/2.5+ 1)；

MA2:=REF (Ma (CR,), m2/2.5+1);

DKX:=(20*MID+ 19*REF(MID， 1)+ 18*REF(MID，2)+ 17*REF(MID，3)+ 16*REF(MID，4)+ 15*REF(MID，5)+ 14*REF(MID，6)+ 13*REF(MID，6

MADKX:=MA(DKX，M)；

XG:CROSS(MA 1, CR) and (dkx) < (MADKX)；