=IF(A3"",SUM(B$2:B2)-SUM(C$1:C1),"") 看不懂
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=IF(A3"",SUM(B$2:B2)-SUM(C$1:C1),"") 看不懂
如果A3不等于空值,返回B$2:B2的和减去C$1:C1的和,否则返回空值
=IF(A3"",SUM(B$2:B2)-SUM(C$1:C1),"") 看不懂
如果A3不等于空值,返回B$2:B2的和减去C$1:C1的和,否则返回空值