合併格 加總 (9302)


D2=IF(B2="","",SUM(OFFSET(C2,,,-LOOKUP(9,-MATCH(1=1,B3:B17<>"",{1,0})))))


另解{=IF(B2="","",SUM(OFFSET(C2,,,MATCH(,MOD((B3:B17="")+(C3:C17=""),2),))))


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