短牛中牛大牛源码：请老师编个“短牛大牛”同时出现和“短牛中牛大牛”同时出现时的选股公式N1:=5;N2:=10;LLC:=REF(CLOSE,1);RSI15:SMA(MAX(CLOSE-LLC,0),N1,1)/SMA(ABS(CLOSE-LLC),N1,1)*10;RSI10:SMA(MAX(CLOSE-LLC,0),N2,1)/SMA(ABS(CLOSE-LLC),N2,1)*10;VAR21:=C-REF(C,1);VAR22:=100*EMA(EMA(VAR21,6),6)/EMA(EMA(ABS(VAR21),6),6);MA5:=EMA(C,5);MA13:=EMA(C,13);UP:=DRAWLINE(L=LLV(L,BARSLAST(CROSS(MA13,MA5))+1),LLV(L,BARSLAST(CROSS(MA13,MA5))+1),H=HHV(H,BARSLAST(CROSS(MA5,MA13))+1),HHV(H,BARSLAST(CROSS(MA5,MA13))+1),0);DOWN:=DRAWLINE(H=HHV(H,BARSLAST(CROSS(MA