写出笑脸和哭脸的选股

编写要求：

N:=2; SHORT:=12*N; LONG:=29*N; M:=9*N; DIFF : EMA(CLOSE,SHORT) - EMA(CLOSE,LONG); DEA : EMA(DIFF,M); MACD : 2*(DIFF-DEA), COLORSTICK; 0,dotline,colorwhite; {以下处理底背离} N1:=last(MACD<0);{绿柱天数} N2:=REF(last(MACD>0),N1);{绿柱前红柱天数} N3:=REF(last(MACD<0),N2+N1);{红柱前绿柱天数} MINMD1:=LLV(MACD,N1); MINMD3:=REF(LLV(MACD,N3+N2),N1); MINDIFF1:=LLV(DIFF,N1); MINDIFF3:=REF(LLV(DIFF,N2+N3),N1); MINDEA1:=LLV(DEA,N1); MINDEA3:=REF(LLV(DEA,N2+N3),N1); 股价L1:=LLV(L,N1); 股价L3:=REF(LLV(L,N2+N3),N1); 股价LL:=LLV(L,N1+N2+N3); 绿柱缩短:=MACD<0 AND MACD>REF(MACD,1) AND REF(MACD,1)MINMD3; DIFF底背离:=DIFF<0 AND MINDIFF1>MINDIFF3; DEA底背离:=DEA<0 AND MINDEA1>MINDEA3; 股价新低:=股价L1=股价LL and 股价L1/股价L3<0.9; 底背离:绿柱缩短 AND MACD底背离 AND DIFF底背离 AND DEA底背离 AND 股价新低,COLORRED,PRECIS0,LINETHICK0; VERTLINE(底背离 ,1 ),colorred; DRAWICON(底背离,MACD*0.97,1,1),ALIGN1; {以下处理顶背离} M1:=last(MACD>0);{ 红柱天数} M2:=REF(last(MACD<0),M1); {红柱前绿柱天数} M3:=REF(last(MACD>0),M2+M1); {绿柱前红柱天数} MAXMD1:=HHV(MACD,M1); MAXMD3:=REF(HHV(MACD,M3+M2),M1); MAXDIFF1:=HHV(DIFF,M1); MAXDIFF3:=REF(HHV(DIFF,M2+M3),M1); MAXDEA1:=HHV(DEA,M1); MAXDEA3:=REF(HHV(DEA,M2+M3),M1); 股价H1:=HHV(H,M1); 股价HH:=HHV(H,M1+M2+M3); 红柱缩短:=MACD>0 AND MACDREF(MACD,2); MACD顶背离:=MACD>0 AND MAXMD10 AND MAXDIFF10 AND MAXDEA1

解答：

?N:=2;

SHORT:=12*N;