做个股价跌到买入线的选股公式

编写要求：

N 1 100 20M 1 100 32P1 1 100 80P2 1 100 100VAR1:=(C+H+O+L)/4;卖出:XMA(VAR1,N)*(1+P1/1000),COLORGREEN,LINETHICK2;买入:XMA(VAR1,M)*(1-P2/1000),COLORMAGENTA,LINETHICK2;幅度:100*(卖出-买入)/买入,NODRAW;MA1:=MA(VAR1,3);STICKLINE(卖出>LOW AND 卖出MIN(C,O) AND 卖出LOW AND 卖出LOW AND 买入MIN(C,O) AND 买入LOW AND 买入HIGH,OPEN,CLOSE,3,0),COLORMAGENTA;STICKLINE(买入>HIGH,HIGH,LOW,0,0),COLORMAGENTA;DRAWTEXT(CROSS(LOW,买入),LOW*0.95,'Ｂ'),COLORRED,LINETHICK2;DRAWTEXT(CROSS(卖出,HIGH),HIGH*1.02,'Ｓ'),COLORGREEN;AA1:=AMOUNT/V;BB1:=L1.2;DD1:=L

解答：

VAR1:=(C+H+O+L)/4;