主题：以下策略为金字塔程序化双边策略（可开多，可开空），请老师更改为两个单边策略（只开空一个策略，只开多一个策略）

 只开空：

INPUT:N(55,1,100,1),SS(1,1,100,1),NMIN(10,1,100,1),LONG_CO(0.999,0.001,1.1,0.001),SHORT_CO(1.001,0.001,1.1,0.001);
BUYTIME:=TIME>OPENTIME(1) AND TIME<CLOSETIME(0)-NMIN*100;      //设置日内交易的开仓时段           
SELLTIME:=TIME>=CLOSETIME(0)-NMIN*100;                                     
UP_LINE:REF(HHV(H,N),1)*LONG_CO;                                             
DOWN_LINE:REF(LLV(L,N),1)*SHORT_CO;                                            
MIDDLE_LINE:(UP_LINE+DOWN_LINE)/2;                                            
                                                    
CONKK:L<=DOWN_LINE AND BUYTIME;                                                                                                                //设置平多条件
CONPK:C>MIDDLE_LINE;                                                                   

 
SELLSHORT(CONPK AND HOLDING<0,HOLDING,MARKET);
BUYSHORT(CONKK AND HOLDING=0,SS,MARKET);

IF SELLTIME THEN                                                                               //收盘前全部平仓
BEGIN
SELLSHORT(HOLDING<0,HOLDING,MARKET);
END

只开多：

INPUT:N(55,1,100,1),SS(1,1,100,1),NMIN(10,1,100,1),LONG_CO(0.999,0.001,1.1,0.001),SHORT_CO(1.001,0.001,1.1,0.001);
BUYTIME:=TIME>OPENTIME(1) AND TIME<CLOSETIME(0)-NMIN*100;      //设置日内交易的开仓时段           
SELLTIME:=TIME>=CLOSETIME(0)-NMIN*100;                                        
UP_LINE:REF(HHV(H,N),1)*LONG_CO;                                           
DOWN_LINE:REF(LLV(L,N),1)*SHORT_CO;                                   
MIDDLE_LINE:(UP_LINE+DOWN_LINE)/2;                                             

CONKD:H>=UP_LINE AND BUYTIME ;                                                                                                 
CONPD:C<MIDDLE_LINE;                                                               
                                                               
SELL(CONPD AND HOLDING>0,HOLDING,MARKET);
BUY(CONKD AND HOLDING=0,SS,MARKET);

 IF SELLTIME THEN                                                                               //收盘前全部平仓
BEGIN
SELL(HOLDING>0,HOLDING,MARKET);
END