将下面副图买入符号改写为选股公式

LC:=REF(CLOSE,1);
RSI:=((SMA(MAX(CLOSE - LC,0),4.1,1))/(SMA(ABS(CLOSE - LC),4.1,1)))*(100);
A1:=AMOUNT/VOL/1000;
B2:=(3*HIGH+LOW+OPEN+2*CLOSE)/7;
D3:=SUM(AMOUNT,13)/A1/1000;
E4:=DMA(B2,VOL/D3);
买:=(CLOSE-E4)/E4*1000;
底部:(CROSS(RSI,11))*(100),colorred;