主题：请老师修改公式

//策略名：MACD背离模型
//类型：股票t+0
//使用市场：个股
//修订时间：20170401

DIFF:=EMA(CLOSE,12)-EMA(CLOSE,26);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA),COLORSTICK; N:=BARSLAST(CROSS(DIFF,DEA))+1;
N1:=BARSLAST(CROSS(DEA,DIFF))+1;
DIFF1:=REF(REF(DIFF,N-1),1);
DIFF2:=REF(REF(DIFF,N1-1),1);
C1:=REF(REF(C,N-1),1);
C2:=REF(REF(C,N1-1),1);
DBL1:=DIFF>DIFF1 AND CROSS(DIFF,DEA) AND C<C1; //底背离
DBL:=DIFF<DIFF2 AND  CROSS(DEA,DIFF) AND C>C2; //顶背离
BUY(DBL1 AND NUMLOSSTRADE<2,100,MARKETR);
SELL(DBL AND HOLDING>0,100,MARKETR);
SELL(EVERY(C<=REF(C,1),5),0,MARKETR);