一阳吃二阴和三阴预警

编写要求：

一阳吃二阴和三阴预警,量比大于1.5倍.

解答：

{吃两阴}

REF(O,2)>REF(C,2) AND REF(O,1)>REF(C,1) AND O<=MIN(REF(C,1),REF(C,2)) AND C>=MAX(REF(O,1),REF(O,2));

{吃3阴}

REF(O,3)>REF(C,3) AND REF(O,2)>REF(C,2) AND REF(O,1)>REF(C,1) AND O<=REF(HHV(C,3),1) AND C>=REF(HHV(O,3),1);