input:N(6,0,100),M(0.5);
P3:=(BIGORDER(1)-BIGORDER(2))*vol;
DDX:=P3/CAPITAL*100;
DDY:=(ORDER(2)-ORDER(1))/CAPITAL*100;
tj1:=DDX/ma(abs(ref(ddx,1)),6)>=N AND DDX>=M ;
tj2:=(c-ref(c,3))/ref(c,3)<=0.20;
tj3:=c=hhv(c,n) ;
tj4:=c>=ma(c,5) ;
选股:tj1 and tj4;