=IF(AND(A1<>"",B1<>""),"都有",IF(AND(A1="",B1<>""),1,IF(AND(A1<>"",B1=""),2,3)))
公式:=IF(AND(A1<>"",B1<>""),"",(A1="")+(B1="")*2)
=if(and(a1="",b1<>""),1,if(and(a1<>"",b1=""),2,3))