A8输入=IF(AND(A1=1,A2=2),1,IF(AND(A1=1,A2=4),3,IF(AND(A1=3,A2=4),8,0)))
A8公式:=if(and(a1=1,a2=2),1,if(and(a1=1,a2=4),3,if(and(a1=3,a2=4),8,"")))
A8=A2-A1