A.A[(P/A,i,m+n)-(P/A,i,m)]
B.A(P/A,i,n).(P/A,i,m)
C.A(P/A,i,n).(P/F,i,m)
D.A(P/A,i,n).(P/F,i,m+n)
E.A(F/A,i,n).(P/F,i,m+n)
A.O(1)
B.O(m+n)
C.O(log2mn)
D.O(m*n)
A.8,6
B.7,4
C.6,4
D.8,3
Keith:__________,do you know where the police station is?
Woman:No,I‘m sorry,I don’t.I‘m not from around here.
A.I"m sorry
B.Excuse me
C.Pardon
D.Attention