=SUM(SUBTOTAL(9,OFFSET($A$1,MOD(LOOKUP((COLUMN(A:D)+1)*100,SMALL(IF(A1:D7<>"",COLUMN(A1:D7)*100+ROW(A1:D7)),ROW(INDIRECT("1:"&COUNTA(A1:D7)))),SMALL(IF(A1:D7<>"",COLUMN(A1:D7)*100+ROW(A1:D7)),ROW(INDIRECT("1:"&COUNTA(A1:D7))))),100)-1,COLUMN(A1:D1)-1)))数组,求公式优化