cc:=c#season;hh:=h#season;ll:=l#season;oo:=o#season;vv:=v#season;tv:=ref(ref(vv,1),barslast(vv!ref(vv,1)));min(hh-max(cc,oo),min(cc,oo)-ll)>abs(cc-oo)and vv>tv and cc>oo; 20210311
局部低点预选a:=backset(llv(l,5)<ref(llv(l,4),1),4);局部低点预选b:=backset(局部低点预选a=0 and ref(局部低点预选a,1)=1,2);局部低点预选c:=if(局部低点预选b=1 and ref(局部低点预选b,1)=0,-1,0);aaaa:局部低点预选c=-1;(backset为未来函数,请谨慎)