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;