After learning some fancy algorithms about palindromes, Chouti found palindromes very interesting, so he wants to challenge you with this problem.

Chouti has got two strings $A$ and $B$. Since he likes palindromes, he would like to pick $a$ as some non-empty palindromic substring of $A$ and $b$ as some non-empty palindromic substring of $B$. Concatenating them, he will get string $ab$.

Chouti thinks strings he could get this way are interesting, so he wants to know how many different strings he can get.

The first line contains a single string $A$ ($1 \le |A| \le 2 \cdot 10^5$).

The second line contains a single string $B$ ($1 \le |B| \le 2 \cdot 10^5$).

Strings $A$ and $B$ contain only lowercase English letters.

The first and only line should contain a single integer — the number of possible strings.