第二次询问,字符串为 aba\texttt{aba}aba,包含 a,ab,ba,aba\texttt{a},\texttt{ab},\texttt{ba},\texttt{aba}a,ab,ba,aba, 共 444 种本质不同子串。
应改为
第二次询问,字符串为 aba\texttt{aba}aba,包含 a,b,ab,ba,aba\texttt{a},\texttt{b},\texttt{ab},\texttt{ba},\texttt{aba}a,b,ab,ba,aba, 共 555 种本质不同子串。
第二次询问,字符串为 $\texttt{aba}$,包含 $\texttt{a},\texttt{b},\texttt{ab},\texttt{ba},\texttt{aba}$, 共 $5$ 种本质不同子串。