D1:=(L+H+C*2)/4;
D2:= MA(D1,4);
D3:=HHV(D2,10);
D4:=MA(D3,3);
D5:=1.25*D4-0.25*D3;
A:=IF(D5>D3,D3,D5);
F1:=LLV(D2,10);
F2:=MA(F1,3); F3:=1.25*F2-0.25*F1;
B:=IF(F3<F1,F1,F3);
MA13:=MA(C,13);
DOU:=CROSS(C,B) AND CROSS(C,MA13) AND CROSS(C,A);
DOUDOU:=CROSS(C,MA13) AND CROSS(C,A);
买入:DOU OR DOUDOU;
