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编写要求：

源码：VAR1:=(2*CLOSE+HIGH+LOW)/4;风险区: 80, POINTDOT;底部区: 20, POINTDOT;VAR2:=LLV(LOW,5);VAR3:=HHV(HIGH,4);红线上穿买: EMA((VAR1-VAR2)/(VAR3-VAR2)*100,4),LINETHICK2,COLORRED;红线下穿卖: EMA(0.667*REF(红线上穿买,1)+0.333*红线上穿买,2),LINETHICK1,COLOR00FF00;VAR4:=(HHV(HIGH,4)-VAR1)/(HHV(HIGH,4)-LLV(LOW,4))*100-72;VAR5:=(VAR1-LLV(LOW,4))/(HHV(HIGH,4)-LLV(LOW,4))*100;VAR6:=SMA(VAR5,2,1);进出快线:100*(C-LLV(L,9))/(HHV(C,9)-LLV(L,9)),COLORFFFF00;关注: IF(CROSS(红线上穿买,红线下穿卖),15,0);买:IF(CROSS(进出快线,红线上穿买),30,0);要求：根据此源码首次出现紫红色买入信号后，间隔大于3天小于14天内再出现一次紫色买入信号，而此时的股价低于首次出现信号时候的股价，先谢谢了。

解答：

 VAR1:=(2*CLOSE+HIGH+LOW)/4;

VAR2:=LLV(LOW,5);
VAR3:=HHV(HIGH,4);
红线上穿买:=EMA((VAR1-VAR2)/(VAR3-VAR2)*100,4);
红线下穿卖:=EMA(0.667*REF(红线上穿买,1)+0.333*红线上穿买,2);
B1:=CROSS(红线上穿买,红线下穿卖) AND COUNT(红线上穿买>40,BARSLAST(CROSS(40,红线上穿买)))=0 AND COUNT(CROSS(红线上穿买,红线下穿卖),BARSLAST(CROSS(40,红线上穿买)))=2;
B2:=REF((2*C+H+L)/4,REF(BARSLAST(CROSS(红线上穿买,红线下穿卖)),1)+1)>=(2*C+H+L)/4;
OK:B1 AND B2;
 

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