麻烦老师按照这条通达信的这条指示公式，帮忙写一个选股公式。

给:EMA(C,2),COLORRED;力:EMA(SLOPE(C,9)*20+C,37);买:=CROSS(给,力);卖:=CROSS(力,给);DRAWICON(买,L*0.97,1);DRAWTEXT(买,L*0.95,✀进✀),COLORYELLOW;DRAWICON(卖,H*1.03,2);DRAWTEXT(卖,H*1.08,✀撤✀),COLORWHITE;STICKLINE(给>=力,LOW,HIGH,0.01,0),COLOR0000DD;STICKLINE(给>=力,CLOSE,OPEN,2,1),COLORRED;STICKLINE(给>=力,LOW,HIGH,0.01,0),COLOR0000DD;STICKLINE(给>=力,CLOSE,OPEN,2,1),COLORRED;STICKLINE(给<力,LOW,HIGH,0.01,0),COLORFFDD00;STICKLINE(给<力,CLOSE,OPEN,2,0),COLORFFFF00;STICKLINE(CROSS(给,力),OPEN,CLOSE,2.5,0),COLORYELLOW;STICKLINE(CROSS(力,给),OPEN,CLOSE,2.5,0),COLORWHITE;