ZKK:=kd.K#WEEK(9,3,3),COLORRED; ZKD:=KD.D#WEEK(9,3,3),COLORYELLOW; X_1:=FILTER(crOSS(ZKK,ZKD) AND REF(ZKD,1)<30,13); X_2:=CROSS(ZKK,ZKD); 红加号:X_2;